Untitled - KCM EXAM TIPS

Transcription

Untitled - KCM EXAM TIPS
```The following information may be useful. The symbols have their usual meaning.
Maklumat berikut mungkin berfaedah. Simbol-simbol mempunyai makna yang biasa.
16.
Power, P
=
Kuasa, P
=
1.
a =
2.
v2 = u2 + 2as
3.
s = ut
+ ½ at2
17.
V = IR
4.
Momentum = mv
18.
Power, P = IV
Kuasa
5.
F = ma
19.
6.
Kinetic energy = ½ mv2
20.
Tenaga kinetik
7.
Gravitational potential energy = mgh
Efficiency =
Kecekapan
21.
Tenaga keupayaan graviti
8.
Elastic potential energy = ½ Fx
22.
n =
23.
n=
Tenaga keupayaan kenyal
9.
ρ=
10.
Pressure, P = hρg
n =
Tekanan
11.
Pressure, P =
24.
λ =
25.
Q= It
26.
E = I (R + r)
27.
eV = ½ mv2
Tekanan
12.
13.
14.
Heat, Q = mcθ
Haba
= Constant (pemalar)
E = m c2
28.
15.
v= f λ
29.
g = 10 ms-2
SECTION A
BAHAGIAN A
[60 marks]
[60 markah]
Answer all questions in this section.
Jawab semua soalan dalam bahagian ini.
1.
Diagram 1.1 shows a measuring instrument that normally used in our daily life.
Rajah 1.1 menunjukkan alat pemgukur yang biasa digunakan dalam kehidupan
harian.
Diagram 1.1
Rajah 1.1
(a)
Name the physical quantity can be measured by the instrument?
Namakan kuantiti fizik yang boleh diukur oleh alat itu ?
.............................................................................................................................
[1 mark]
[1 markah]
(b)
Diagram 1.2 and Diagram 1.3 show two scales of compression balances .
Rajah 1.2 dan 1.3 menunjukkan dua skala bagi neraca mampat .
g
kg
(i)
.
(ii)
(c)
Diagram 1.2
Rajah 1.2
Which compression balance is more sensitive ?
Neraca mampat yang manakah lebih peka?
Diagran 1.3
Rajah 1.3
..................................................................................................................
[1 mark]
[1 markah]
Give one reason for answer in 1b(i).
Beri satu sebab bagi jawapan di 1b(i)
..................................................................................................................
[1 mark]
[1 markah]
Give one method to increase the accuracy of readings.
Beri satu kaedah untuk meningkatkan kejituan bagi bacaan.
..............................................................................................................................
[1 mark]
[1 markah]
2.
Diagram 2.1 shows a water waves travelling from deep area to a shallow area.
ke kawasan cetek.
Diagram 2.1
Rajah 2.1
(a)
What type of wave is the water waves?
Apakah jenis gelombang bagi gelombang air?/
.............................................................................................................................
[1 mark]
[1 markah]
(b)
Complete Diagram 2.1 to show the direction of propagation of the water
waves in deep area and shallow area.
Draw the waves’ patterns in both areas.
Lengkapkan Rajah 2.1 untuk menunjukkan arah perambatan bagi gelombang
air itu dalam kawasan dalam dan kawasan cetek.
Lukis corak gelombang dalam kedua-dua kawasan.
[2 marks]
[2 markah]
(c)
Calculate the wavelength at deep area if the speed of water waves at shallow
area and deep area are 4.0 ms-1 and 9.0 ms-1, respectively.
The wavelength at shallow area is 2 m.
kawasan cetek dan kawasan dalam adalah 4.0 ms-1 dan 9.0 ms-1, masingmasing.
[2 marks]
[2 markah]
3.
Diagram 3 shows a system used in a factory to ensure the thickness of cardboard sheet
Rajah 3 m enunjukkan suatu sistem yang digunakan dalam sebuah kilang untuk
Diagram 3
Rajah 3
(a)
What is the meaning of radioactive?
………………………………………………………….................................
[1 mark]
[1 markah]
(b)
Name the suitable type of radioactive radiation should be emitted by the
source.
Namakan jenis sinaran yang sesuai perlu dipancarkan oleh sumber itu.
………………………………………………………….................................
[1 mark]
[1 markah]
(c)
The thickness of cardboard sheets are accepted if the reading of the counter is
230 counts per minute.
bilangan per minit.
(i)
If one of the readings shown by the counter is less than 230 counts per
minute, what can you say about the thickness of the cardboard sheet
compared to the accepted thickness?
Jika satu dari bacaan yang ditunjukkan oleh pembilang itu kurang dari
230 bilangan per minit, apakah yang boleh anda katakan mengenai
ketebalan kepingan kadbod itu berbanding dengan nilai ketebalan
yang diterima?
Tick (√ ) the correct answer in the box provided.
Tanda (√ ) jawapan betul dalam kotak yang disediakan.
The cardboard sheet is thicker.
The cardboard sheet is thinner.
[1 mark]
[1 markah]
(ii)
Give one reason for the answer in 3(c) (i).
Beri satu sebab bagi jawapan bagi 3(c) (i).
………………………………………………………………............…
[1 mark]
[1 markah]
(d)
The initial mass of the radioactive source used is 100.0 g. The mass of the
source becomes 12.5 g after it is being used for 9 years.
Jisim awal bahan radioaktif yang digunakan ialah 100.0 g. Jisim bahan itu
menjadi 12.5 g selepas ia digunakan selama 9 tahun.
Calculate the half life of the radioactive source?
Hitung separuh hayat bahan radioaktif itu?
[2 marks]
[2 markah]
4.
Diagram 4 shows the use of a transistor in a circuit.
Rajah 4 menunjukkan kegunaan transistor dalam suatu litar.
Diagram 4
Rajah 4
(a)
(b)
Name the type of transistor used.
Namakan jenis transistor yang digunakan.
.....………..……………………………………………..………………………
[1 mark]
[1 markah]
State the function of
Nyatakan fungsi
(i)
(ii)
relay switch.
suis geganti.
…………………………………………………………………………
[1 mark]
[1 markah]
resistor R 1
perintang R 1
…………………………………………………………………………
[1 mark]
[1 markah]
(c)
The transistor is switched on when the base voltage V2 ≥ 2 V.
Calculate the minimum value of R 2 when the transistor is switched on.
Transistor itu dihidupkan apabila voltan tapak V2 ≥ 2 V
Hitungkan nilai minimum R 2 apabila transistor itu dihidupkan
[2 marks]
[2 markah]
(d)
has
The resistor R 2 is then replaced with a light dependent resistor, LDR,which
high resistance when it is dark.
Perintang R 2 kemudian digantikan dengan perintang peka cahaya,PPC, yang
mempunyai rintangan tinggi apabila gelap.
(i)
State whether the bulb lighted up during the day.
...........……………………………………………..…………………....
[1 mark]
[1 markah]
(ii)
Give one reason for the answer in 4 (d) (i).
Beri satu sebab bagi jawapan di 4 (d) (i).
...........……………………………………………..…………………....
[1 mark]
[1 markah]
5.
Diagram 5.1 and 5.2 show two identical springs supporting two babies, P and Q, of
mass, 5 kg and 8 kg respectively.
Rajah 5. 1 dan 5.2 m enunjukkan dua spring yang serupa menampung dua orang
bayi , P dan Q berjisim 5 kg dan 8 kg masing-masing.
Diagram 5.1
Rajah 5.1
(a)
(b)
Diagram 5.2
Rajah 5.2
What is the meaning of mass?
Apakah yang dimaksudkan dengan jisim?
…………………………………………………………......................................
[1 mark]
[1 markah]
Observe Diagram 5.1 and Diagram 5.2,
Perhatikan Rajah 5.1 dan Rajah 5.2,
(i)
compare the mass of the baby
bandingkan jisim bayi.
...........……………………………………………..…………………....
[1 mark]
[1 markah]
(ii)
(iii)
compare the extension of the spring, y.
bandingkan pemanjangan spring, y.
...........……………………………………………..…………………....
[1 mark]
[1 markah]
compare the spring constant of the spring
bandingkan pemalar spring bagi spring
...........……………………………………………..…………………....
[1 mark]
[1 markah]
(c)
(i)
Relate the mass of the baby with the extension of the spring.
Hubungkaitkan jisim bayi dengan pemanjangan
………………………………………………….....................................
[1 mark]
[1 markah]
(ii)
State the physics law involved.
Nyatakan hukum fizik yang terlibat.
…………………………………………………. ....................................
[1 mark]
[1 markah]
(d)
Another identical spring is hung parallel with the spring in Diagram 5.1.
Satu spring yang serupa digantung selari dengan spring dalam Rajah 5.1.
(i)
(ii)
What happens to the extension of the spring?
Apakah yang berlaku kepada pemanjangan spring?
...........……………………………………………..…………………....
[1 mark]
[1 markah]
Give one reason to the answer in 5(d)(i).
Beri satu sebab bagi jawapan dalam 5(d)(i).
...........……………………………………………..…………………....
[1 mark]
[1 markah]
6.
Diagram 6.1 and Diagram 6.2 show current is induced in the coils when similar
magnets are dropped into the coils from the same height.
Rajah 6.1 dan R ajah 6.2 menunjukkan arus diaruhkan dalam gegelung-gegelung
apabila dua batang magnet yang serupa dijatuhkan ke dalam gegelung-gegelung itu
dari ketinggian yang sama.
Diagram 6.1
Rajah 6.1
(a)
Diagram 6.2
Rajah 6.2
What is meant by induced current?
Apakah yang dimaksudkan dengan arus aruhan?
…………………………………………………………......................................
[1 mark]
[1 markah]
(b)
(i)
Give one reason why current is induced in the coil.
Berikan satu sebab mengapa arus diaruhkan dalam gegelung.
...........……………………………………………..………………….....
[1 mark]
[1 markah]
(ii)
Using an arrow, show the direction of the induced current in Diagram
6.1
Menggunakan anak panah, tunjukkan arah arus aruhan di Rajah 6.1.
[1 mark]
[1 markah]
(iii)
Name the law used to determine the direction of the induced current in
6(b) (ii).
Namakan hukum yang digunakan untuk menentukan arah arus aruhan
dalam 6(b)(ii).
...........……………………………………………..…………………....
[1 mark]
[1 markah]
(c)
Based on Diagram 6.1 and Diagram 6.2, compare
Berdasarkan Rajah 6.1 dan Rajah 6.2 bandingkan,
(i)
number of turns of the coils
bilangan lilitan gegelung
...........……………………………………………..…………………....
[1 mark]
[1 markah]
(ii)
deflection of the pointer of the galvanometer
pesongan jarum galvanometer
...........……………………………………………..…………………....
[1 mark]
[1 markah]
(d)
State the relationship between number of turns of the coil and,
Nyatakan hubungan antara bilangan lilitan gegelung dan,
(i)
deflection of the pointer of the galvanometer.
pesongan jarum galvanometer
...........……………………………………………..…………………....
[1 mark]
[1 markah]
(ii)
magnitude of current flows in the coils.
magnitud arus yang mengalir dalam gegelung
...........……………………………………………..…………………....
[1 mark]
[1 markah]
7.
Diagram 7.1 shows the structure of mirror periscope.
Rajah 7.1 menunjukkan struktur bagi periskop cermin.
Diagram 7.1
Rajah 7.1
(a)
Name the light wave phenomenon shown in Diagram 7.1.
Namakan fenomena gelombang cahaya yang ditunjukkan dalam Rajah 7.1.
…………………………………………………………......................................
[1 mark]
[1 markah]
(b)
(i)
On Diagram 7.1, complete the path of light ray from the object to the
observer’s eye.
ke mata pemerhati.
[2 marks]
[2 markah]
(ii)
State one characteristics of the image observed.
Nyatakan satu ciri imej yang diperhatikan.
...........……………………………………………..………………….....
[1 mark]
[1 markah]
(c)
Diagram 7.2 shows a glass prism.
Rajah 7.2 menunjukkan satu prisma kaca
Diagram 7.2
Rajah 7.2
(i)
The critical angle of the glass prism is 420.
Calculate the refractive index of the glass prism.
Sudut genting bagi prisma kaca adalah 420
Hitung indeks biasan bagi prisma kaca itu.
[2 marks]
[2 markah]
(ii)
What happens to the light ray after passing point P?
Apakah yang berlaku kepada sinar cahaya itu selepas melalui titik P?
...........……………………………………………..…………………....
[1 mark]
[1 markah]
(iii)
(d)
On Diagram 7.2, complete the path of light ray from point P.
[1 mark]
[1 markah]
The mirror periscope in Diagram 7.1 cannot produced a clear image.
Periskop cermin dalam Rajah 7.1 tidak boleh menghasilkan imej yang jelas.
(i)
In the space below, draw the arrangement of the glass prisms in
Diagram 7.2 to enable clearer image produced.
Pada ruang di bawah, lukis susunan prisma kaca dalam Rajah 7.2
bagi membolehkan imej yang lebih jelas dihasilkan.
[1 mark]
[1 markah]
(ii)
Give one reason for the answer in 7(d)(i).
Beri satu sebab bagi jawapan dalam 7(d)(i).
...........……………………………………………..………………….....
[1 mark]
[1 markah]
8.
(a)
A solid substance of mass 0.05 kg is heated using an immersion heater of
240V, 1 kW for 1.0 minute until its temperature is 78oC
Suatu bahan pepejal berjisim 0.05 kg dipanaskan menggunakan pemanas
rendam 240 V, 1 kW selama 1 minit sehinggan suhunya adalah 78oC.
(i)
What is the meaning of temperature?
Apakah yang dimaksudkan dengan suhu?
..................................................................................................................
[1 mark]
[1 markah]
(ii)
Calculate the specific heat cpacity of the substance if the initial
temperature of the substance is 20oC?
Hitung muatan haba tentu bagi bahan itu jika suhu awal bahan itu
[2 marks]
[2 markah]
(b)
The substance is then put into a beaker filled with water of mass 2.0 kg and
temperature 28oC.
Bahan itu kemudiannya diletakkan ke dalam bikar berisi air berjisim 2.0 kg
dan suhu 28oC.
Calculate the final temperature of the substance and water.
Hitung suhu akhir bagi bahan itu dan air.
(Specific heat capacity of water is 4 200 Jkg-1oC-1)
(Muatan haba tentu bagi air adalah 4 200 Jkg-1oC-1)
[2 marks]
[2 markah]
(c)
Diagram 8.1 shows parts of the ice box used to store ice.
Rajah 8.1 menunjukkan bahagian bagi kotak ais.
Diagram 8.1
Rajah 8.1
Table 8 shows the characteristics of two different ice boxes.
Ice box
Kotak ais
R
S
Material X
Bahan X
Air
Udara
Polystyrene
Polisterin
T
Polystyrene
Polisterin
U
Air
Udara
Specific heat capacity of
inner box
Muatan haba tentu bagi
kotak dalam
Small
Kecil
Big
Besar
Small
Kecil
Big
Besar
Diameter of double
walled tube
Diameter bagi tiub
dinding dua lapis
Small
Kecil
Big
Besar
Big
Besar
Big
Besar
Table 8
Based on Table 8, state the suitable characteristics of the ice box to be used as
an efficient ice storage .
Give one reason for suitable characteristics.
Berdasarkan Jadual 8, nyatakan ciri-ciri kesesuaian kotak ais untuk
digunakan sebagai tempat simpanan ais yang cekap.
Beri satu sebab untuk kesesuaian ciri itu.
(i)
Material X :
Bahan X :
..................................................................................................................
Reason :
Sebab :
..................................................................................................................
[2 marks]
[2 markah]
(ii)
The specific heat capacity of inner box :
Muatan haba tentu bagi kotak dalam :
..................................................................................................................
Reason :
Sebab :
................................................................................................................
[2 marks]
[2 markah]
(iii)
Diameter of double walled tube :
Diameter bagi tiub dinding dua lapis :
..................................................................................................................
Reason :
Sebab :
................................................................................................................
[2 marks]
[2 markah]
(d)
Based on the answers in 8(c) (i), 8(c)(ii) and 8(c)(iii), determine the most
suitable ice box to be used as an efficient ice storage .
Berdasarkan jawapan di 8(c) (i), 8(c)(ii) dan 8(c)(iii), tentukan kotak ais yang
paling sesuai digunakan sebagai tempat simpanan ais yang efisien.
..............................................................................................................................
[1 mark]
[1 markah]
SECTION B
BAHAGIAN B
[20 marks]
[20 markah]
Answer any one question from this section.
Jawab mana-mana satu soalan daripada bahagian ini.
9.
Diagram 9.1 and Diagram 9.2 show the distances between two streams of water, x1
and x2 when air are blown in the middle with two tubes which nozzles have different
cross sectional areas. The air pressure supplied at both tubes is the same.
Rajah 9.1 dan R ajah 9.2 menunjukkan jarak di antara dua al iran air, x 1 dan x 2
apabila udara ditiup pada bahagian tengah dengan dua tiub yang mana muncungnya
mempunyai luas keratan rentas yang berbeza. Tekanan udara yang dibekalkan pada
Diagram 9.1
Rajah 9.1
(a)
What is the meaning of pressure?
Apakah maksud tekanan?
(b)
Using Diagram 9.1 and Diagram 9.2,
Menggunakan Rajah 9.1 dan Rajah 9.2,
markah]
Diagram 9.2
Rajah 9.2
[1 mark]
[1 markah]
(i)
compare the cross sectional area of the nozzles
bandingkan luas keratan rentas bagi muncung
[1 mark]
[1 markah]
(ii)
compare the distance between the two streams of water, x1 and x2 .
[1 mark]
bandingkan jarak di antara dua aliran air, x 1 dan x 2.
[1
(c)
(iii)
relate the cross sectional area of the nozzle with the speed of the air
at the nozzle.
[1 mark]
hubungkait luas keratan rentas muncung dengan laju udara pada
muncung.
[1 markah]
(iv)
relate the air pressure with the distance, x in between two streams of
water.
[1 mark]
hubungkait tekanan udara dengan jarak, x di antara dua aliran air
itu.
[1 markah]
(v)
deduce the relationship between the speed of air with the air pressure
[1 mark]
deduksikan hubungan antara laju udara dengan tekanan udara
[1 markah]
Diagram 9.3 shows a Bunsen burner.
Rajah 9.3 menunjukkan satu penunu Bunsen.
Diagram 9.3
Rajah 9.3
Explain how the Bunsen burner can produce a blue flame.
[4 marks]
Terangkan bagaimana penunu Bunsen boleh menghasilkan nyalaan biru.
[4 markah]
(d)
Diagram 9.4 shows a submarine.
Rajah 9.4 menunjukkan sebuah kapal selam.
Diagram 9.4
Rajah 9.4
Using appropriate physics concepts, explain the suitable characteristics of the
submarine that can work efficiently and safe.
Menggunakan konsep-konsep fizik yang sesuai, terangkan ciri-ciri kapal
selam yang sesuai yang boleh bekerja dengan cekap dan selamat.
Jawapan anda hendaklah merangkumi aspek-aspek berikut:
10.
(i)
Shape of the submarine
Bentuk kapal selam.
[2 marks]
[2 markah]
(ii)
Strength of material used for body of the submarine
[2 marks]
Kekuatan bahan yang digunakan untuk badan kapal selam [2 markah]
(iii)
Rate of rusting for the material used.
Kadar pengaratan untuk bahan yang digunakan.
(iv)
Component which enable the submarine to submerge and float.
[2 marks]
Komponen yang membolehkan kapal selam menyelam dan terapung.
[2 markah]
(v)
Type of power source used.
Jenis sumber tenaga yang digunakan.
[2 marks]
[2 markah]
[2 marks]
[2 markah]
Diagram 10.1 and Diagram 10.2 show traces on the screen of a Cathode Ray
Oscilloscope (C.R.O) when connected to the output ac generators of different
frequency.
Rajah 10.1 dan Rajah 10.2 menunjukkan surihan pada skrin sebuah Osiloskop Sinar
Katod (O.S.K) apabila disambung kepada output sebuah penjana a.u yang berbeza
frekuensi.
Diagram 10.1
Rajah 10.1
(a)
What is meaning of frequency?
Diagram 10.2
Rajah 10.2
[1 mark]
(b)
(c)
Apakah maksud frekuensi?
[1 markah]
Using Diagram 10.1 and Diagram 10.2, compare the amplitude, number of
complete oscillations and period of the traces.
Relate the number of complete oscillations with the period of oscillation to
make a deduction regarding the relationship between period and frequency.
[5 marks]
Menggunakan Rajah 10.1 dan Rajah 10.2, bandingkan amplitud, bilangan
ayunan lengkap dan tempoh bagi surihan itu.
Hubungkait bilangan ayunan lengkap dengan tempoh ayunan untuk membuat
satu deduksi berkaitan dengan hubungan antara tempoh dengan frekuensi.
[5 markah]
Diagram 10.3 shows a loud speaker produces sound waves in air.
Rajah 10.3 menunjukkan satu pembesar suara menghasilkan gelombang air
di udara.
Diagram 10.3
Rajah 10.3
.
Explain how the sound waves is produced .
Terangkan bagaimana gelombang bunyi dihasilkan.
(d)
[4 marks]
[4 markah]
Diagram 10.4 shows a radar system at an airport.
Diagram 10.4
Rajah 10.4
Using appropriate physics concepts, explain the modifications should be done
on the system so that it can be used to determined the position of an aeroplane
more efficiently.
Menggunakan konsep-konsep fizik yang sesuai, terangkan pengubahsuaian
yang perlu dilakukan ke atas sistem itu supaya ia boleh digunakan untuk
menentukan kedudukan kapal terbang dengan lebih cekap
Jawapan anda hendaklah merangkumi aspek-aspek berikut:
(i)
Diameter of the parabolic disc.
Diameter piring parabola.
[2 marks]
[2 markah]
(ii)
Distance of the signal receiver from the centre of the parabolic disc.
[2 marks]
Jarak penerima isyarat dari pusat piring parabola.
[2 markah]
(iii)
Type of wave transmitted
Jenis gelombang yang dipancar
2 marks]
[2 markah]
(iv)
Height of the parabolic disc from the ground.
Ketinggian piring parabola dari bumi.
[2 marks]
[2 markah]
(v)
Characterictics of the surface of the parabolic disc.
Ciri-ciri bagi permukaan pring parabola
[2 marks]
[2 markah]
SECTION C
BAHAGIAN C
[20 marks]
[20 markah]
Answer any one question from this section.
Jawab mana-mana satu soalan daripada bahagian ini.
11.
Diagram 11.1 shows a vibrating pile driver used to drive a steel pile to the ground.
The force involved in driving the steel pile is impulsive force.
Rajah 11.1 menunjukkan satu pelantak cerucuk yang digunakan untuk menanam
cerucuk besi ke d alam tanah. Daya yang terlibat dalam menanam cerucuk besi i ni
Diagram 11.1
Rajah 11.1
(a)
(i)
What is the meaning of impulsive force?
Apakah yang dimaksudkan dengan daya impuls?
[1 mark]
[1 markah]
(ii).
Explain how the steel pile is driven to the ground.
[4 marks]
Terangkan bagaimana cerucuk besi ditanam ke dalam tanah.
[4 markah]
(b)
Diagram 11.2 .shows a tennis player is hitting a tennis ball with his racket.
Rajah 11.2 menunjukkan seorang pemain tenis memukul bola tenis dengan
menggunakan raketnya.
Diagram 11.2
Rajah 11.2
You are required to investigate the techniques done by the player and the
characteristics of the racket’s string as shown in Table 11.
Anda dikehendaki menyiasat teknik yang dibuat oleh pemain itu dan
ciri-ciri tali raket seperti ditunjukkan dalam Jadual 11.
Techniques
and
characteristic
s of string
Teknik dan
ciri-ciri tali
P
Action after
hitting the ball
Tindakan selepas
memukul bola
Time of contact
between the ball
and racket
Masa tindakan
antara bola
dengan raket
String
tension
Tegangan
tali
Material
of the
string
Bahan tali
raket
Continue to swing
the racket after
hitting the ball
Meneruskan
ayunan raket
selepas memukul
bola
Long
Panjang
High
Tinggi
Steel
Besi
Q
R
S
Continue to swing
the racket after
hitting the ball
Meneruskan
ayunan raket
selepas memukul
bola
Stops the racket
immediately
after hitting the
ball
Menghentikan
raket sebaik
sahaja memukul
bola
Stops the racket
immediately
after hitting the
ball
Menghentikan
raket sebaik
sahaja memukul
bola
Short
Singkat
High
Tinggi
Nylon
Nilon
Short
Singkat
Low
Rendah
Steel
Besi
Long
Panjang
Low
Rendah
Nylon
Nilon
Table 11
Explain the suitability of the techniques done by the tennis player and
characteristics of the racket’s string.
Determine the most effective techniq done by the tennis player and the most
suitable characteristics of the racket’s string to produce high speed motion of
the tennis ball after being hit.
Give reasons for the choice.
[10 marks]
Terangkan kesesuaian teknik yang dibuat oleh pemain tenis itu dan ciri-ciri
bagi tali raket.
Tentukan teknik yang paling efektif yang dibuat oleh pemain tenis itu dan ciriciri yang paling sesuai bagi tali raket untuk menghasilkan gerakan bola tenis
yang berhalaju tinggi selepas dipukul.
Beri sebab bagi pilihan itu.
[10 markah]
(c)
A tennis ball of mass 100 g is moving at a velocity of 40 m s-1. A player hits
the ball and moves in the opposite direction with a velocity of 50 m s -1.
The time of collision is 20 ms.
Sebiji bola tenis berjisim 100 g sedang bergerak pada halaju 40 m s-1.
Seorang pemain memukul bola itu dan bergerak dalam arah berlawanan
dengan halaju 50 m s -1. Masa perlanggaran aalah 20 ms.
Calculate:
Hitungkan:
12.
(i)
The mass of ball in unit kg.
Jisim bola dalam unit kg.
[1 mark]
[1 markah]
(ii)
The time of collision in unit second.
Masa hentaman dalam unit saat.
[1 mark]
[ 1markah]
(iii)
Impulsive force acted on the tennis ball.
Daya impuls yang bertindak ke atas bola tenis itu.
3 marks]
[3 markah]
Diagram 12.1 shows two identical bulbs that are connected to a dry cell and an
ammeter. The current flows through the bulbs is measured by the ammeter.
sel kering dan sebuah ammeter. Arus yang mengalir melalui mentol itu diukur oleh
oleh ammeter itu.
Diagram 12.1
Rajah 12.1
(a)
What is the meaning of current?
Apakah maksud arus?
[1 mark]
[1 markah]
(b)
(i)
Name the type of connection of the bulbs.
Namakan jenis sambungan mentol.
[1 mark]
[1 markah]
Draw the circuit diagram for Diagram 12.1.
Lukis rajah litar untuk Rajah 12.1
[1 mark]
[1 markah]
(ii)
(iii)
(c)
Explain what happens to the reading of ammeter when anidentical bulb
is connected parallel to points P and Q?
[2 marks]
Terangkan apa berlaku kepada bacaan ammeter itu apabila sebiji
mentol yang serupa disambungkan secara selari pada titik P dan Q.
[2 markah]
Diagram 12.2 shows a three pin plug connected to an electric iron labeled
240 V, 1000W. A fuse is installed in the three pin plug.
seterika elektrik berlabel 240 V, 1000W. Satu fius dipasangkan dalam palam
tiga pin itu.
Diagram 12.2
Rajah 12.2
Table 12 shows the characteristics of metals that could be used as fuse wire.
fius.
Melting point (oC)
Takat lebur(oC)
Metal
Logam
Ampere value (A)
Nilai ampere(A)
High
Tinggi
Low
Rendah
Low
Rendah
High
Tinggi
P
Q
R
S
4.2
4.0
4.2
5.0
Diameter of wire
Diameter wayar
Resistivity
Kerintangan
Big
Besar
Small
Kecil
Small
Kecil
Big
Besar
Low
Rendah
High
Tinggi
High
Tinggi
Low
Rendah
Table 12
You are required to determined the most suitable metal that can be used as a
fuse wire as shown in Diagram 12.2.
Anda dikehendaki menentukan logam yang paling sesuai untuk digunakan
sebagai dawai fius seperti yang ditunjukkan dalam Rajah 12.2.
Study the specifications of the four metals based on the following aspects:
Kaji spesifikasi keempat-empat logam itu berdasarkan aspek-aspek berikut:
(i)
Melting point of wire
Takat lebur dawai
[2 marks]
[2 markah]
(ii)
Ampere value of the fuse
[2 marks]
[2 markah]
(iii)
Diameter of wire
Diameter dawai
[2 marks]
[2 markah]
(iv)
(d)
Resistivity of wire
Kerintangan dawai
[2 marks]
[2 markah]
Diagram 12.3 shows an energy saver light bulb labeled 240 V 12 W and it is
connected to the 240 V power supply. The power released by the bulb is
10 W.
Rajah 12.3 menunjukkan sebuah mentol jimar tenaga berlabel 240 V 12W dan
mentol itu ialah 10 W.
Diagram 12.3
Rajah 12.3
Calculate
Hitung
(i)
the current flows through the bulb.
arus yang mengalir melalui mentol.
(ii)
the power lost from the bulb.
kuasa yang hilang daripada mentol itu.
(iii)
the efficiency of the bulb.
kecekapan mentol itu.
[5 marks]
[5 markah]
END OF QUESTION
SOALAN TAMAT
Section A
Bahagian A
[28 marks]
[28 markah]
Answer all questions in this section.
Jawab semua soalan dalam bahagian ini.
1.
A student carries out an experiment to investigate the relationship between the length of wire ,l, and
the resistance ,R. The arrangement of apparatus is shown in Diagram 1.1. An ammeter , dry cells, a
rheostat, a switch and a piece of constantan wire are connected in series. A voltmeter is used to
measure the potential difference, V, across the wire of length , l.
Seorang murid menjalankan satu eksperimen untuk mengkaji hubungan ant ara panjang suatu
dawai, l, dengan rintangan , R. Susunan radas ditunjukkan dalam Rajah 1.1 . Sebuah ammeter, sel
kering, reostat, suis dan da wai konstantan disambung secara sesiri. Sebuah voltmeter digunakan
untuk mengukur beza keupayaan , V , merentasi dawai sepanjang , l .
Ammeter
Ammeter
Jockey
Joki
l
Meter ruler
Pembaris meter
Constantan Wire
Dawai konstantan
Voltmeter
Voltmeter
Diagram 1.1
Rajah 1.1
A constantan wire of length , l = 20.0 cm is set up by moving the jockey on the wire which is
attached to the meter ruler. When the switch is on, the rheostat is adjusted until the ammeter reading
is 1.0 A. The voltmeter reading is as shown in Diagram 1.2.
Dawai konstantan dengan panjang, l = 20.0 cm disediakan dengan menekan joki di atas dawai yang
dilekatkan pada pembaris meter. Apabila suis dihidupkan , reostat dilaraskan sehingga bacaan
ammeter adalah 1.0 A. Bacaan voltmeter, V , adalah sebagaimana ditunjukkan dalam Rajah 1.2.
V = …………………V
Length of wire, l = 20.0 cm
Panjang dawai, l = 20.0 cm
Diagram 1.2
Rajah 1.2
The procedure is repeated with length of constantan wire , l = 40.0 cm, 60.0 cm, 80.0 cm and
100.0 cm. The corresponding voltmeter readings across the wire are shown in Diagram 1.3 , 1.4,
1.5 and 1.6.
Prosedur diulangi dengan panjang dawai konstantan , l = 40.0 cm, 60.0 cm, 80.0 cm dan 100.0 cm.
dan 1.6 .
V = ……………………V
V = ………………V
Length of wire, l = 40.0 cm
Panjang dawai, l = 40.0 cm
Length of wire, l = 60.0 cm
Panjang dawai, l = 60.0 cm
Diagram 1.3
Rajah 1.3
Diagram 1.4
Rajah 1.4
V = ……………………V
Length of wire, l = 80.0 cm
Panjang dawai, l = 80.0 cm
Diagram 1.5
Rajah 1.5
(a)
V = ………………V
Length of wire, l = 100.0 cm
Panjang dawai, l = 100.0 cm
Diagram 1.6
Rajah 1.6
For the experiment describe on page 2 and 3, identify :
Bagi eksperimen yang diterangkan di halaman 2 dan 3, kenalpasti;
(i)
(ii)
(iii)
The manipulated variable
Pembolehubah dimanipulasikan
…………………………………………………………………………………………..
[ 1 mark]
[1 markah]
The responding variable
Pembolehubah bergerak balas
…………………………………………………………………………………………..
[ 1 mark]
[1 markah]
The constant variable
Pembolehubah dimalarkan
…………………………………………………………………………………………..
[ 1 mark]
[1 markah]
(b)
Based on Diagrams 1.2,1.3, 1.4 and 1.5 on pages 3 and 4 :
Berdasarkan Rajah 1.2,1.3,1.4 dan 1.5, dihalaman 3 dan 4 :
(i)
Record the voltmeter reading, V in the spaces provided.
Catat bacaan voltmeter , V , dalam ruang yang disediakan .
[ 2 marks]
[2 markah]
(ii)
For each value of V in 1(b)(i), calculate the resistance, R by using the following
equation;
Bagi setiap nilai V di 1(b)(i), hitung rintangan, R dengan menggunakan persamaan
berikut;
V
R= .
1
Record the value of R.
Catat nilai R.
[ 1 mark]
[1 markah]
(iii)
Tabulate your results for all values of l, V and R in the space below.
Jadualkan keputusan anda bagi semua nilai l, V , dan R pada ruang di bawah.
[4 marks]
[4 markah]
(c)
On the graph paper on page 6, draw a graph of , R against l .
Pada kertas graf di halaman 6, lukis graf , R melawan l.
(d)
Based on the graph in 1(c), state the relationship between R and l .
Berdasarkan graf di 1(c), nyatakan hubungan antara R dengan l .
[5 marks]
[5 markah]
…………………………………………………………………………………………………...
[ 1 mark]
[1 markah]
Graph of , R against l
Graf , R melawan l
2.
A student carries out an experiment to investigate the relationship between the image distance, v ,
and the linear magnification , M of a convex lens . The result of experiment is shown in Diagram 2.1
Seorang pelajar menjalankan eksperimen untuk menyiasat hubungan antara jarak imej, v , dan
pembesaran linear, M bagi sebuah kanta cembung. Keputusan eksperimen ditunjukkan dalam
Rajah 2.1
v/ cm
.
60
50
40
30
20
10
0
1
2
Diagram 2.1
Rajah 2.1
3
4
M
(a) (i)
What happen to M as v increases ?
Apa yang berlaku kepada M apabila v bertambah?
…………………………………………………………………………………………..
[ 1 mark]
[1 markah]
(ii)
Determine the value of v when M = 0.
Show on the graph how you determine the value of v.
Tentukan nilai v apabila M = 0.
Tunjukkan pada graf itu bagaimana anda menentukan nilai v.
v = ………………………………………………………………………………………
[ 2 marks]
[2 markah]
(b) The focal length of the lens is given by the formula f = k , where k , is the gradient of the
graph V against M.
Panjang fokus bagi kanta itu diberikan oleh persamaan, f = k , di mana k, ialah kecerunan
graf V melawan M.
(i)
(ii)
Calculate the gradient , k , of graph .
Show on the graph how you calculate the value of k.
Hitungkan kecerunan graf, k.
Tunjukkan pada graf itu bagaimana anda menghitung nilai k.
k = ……………………………………………………………………………………....
[ 3 marks]
[ 3 markah]
1
, and the value of k in 2(b)(i), calculate the value of P.
Using the formula P =
f
Menggunakan formula P =
1
, dan nilai k dalam 2(b)(i), hitung nilai P.
f
[ 1 mark]
[ 1 markah]
(c)
The magnification of image , M is 2.5.
Pembesaran imej, M ialah 2.5.
(i)
(ii)
Based on the graph in Diagram 2.1 determine the image distance, v.
Show on your graph how you determine v.
Berdasarkan graf di Rajah 2.1, tentukan jarak imej, v.
Tunjukkan pada graf bagaimana anda menentukan v .
v = ……………………………………………………………………………………....
[ 2 marks]
[2 markah]
The formula of lens is given by;
1 1 1
= + .
f u v
Calculate the object distance, u.
Forrmula kanta diberi oleh ;
1 1 1
= +
f u v
Hitungkan jarak objek , u .
[ 2 marks]
[2 markah]
(d)
State one precaution that can be taken to improve the accuracy of the reading in this
experiment.
Nyatakan satu langkah berjaga-jaga yang perlu diambil untuk menambahkan kejituan
bacaan dalam eksperimen ini.
…………………………………………………………………………………………………..
[ 1 mark]
[ 1 markah]
Section B
Bahagian B
[ 12 marks]
[12 markah]
Answer any one question from this section.
Jawab mana-mana satu soalan daripada bahagian ini.
3.
Diagram 3.1 and Diagram 3.2 show the conditions of identical metal boxes which are used to cover a
camera, tied to a big catfish in a river water and to a small shark in the sea water.
Rajah 3.1 dan Rajah 3.2 menunjukkan keadaan kotak logam yang serupa yang digunakan untuk
melindungi kamera, diikat pada ikan keli yang besar dalam air sungai dan ikan yu kecil dalam air
laut.
Metal box
Kotak logam
Camera
Kamera
Metal box
Kotak logam
Diagram 3.1
Rajah 3.1
Camera
Kamera
Diagram 3.2
Rajah 3.2
The metal box tied to the the small shark is more crumple.
Based on the information and observation ;
Berdasarkan maklumat dan pemerhatian tersebut;
(a)
State one suitable inference,
Nyatakan satu inferens yang sesuai.
[1 mark]
[1 markah]
(b)
State one suitable hypothesis
Nyatakan satu hipotesis yang sesuai
[1 mark]
[1 markah]
(c )
With the use of apparatus such as a thistle funnel, measuring cylinder and other apparatus,
describe one experiment to investigate the hypothesis stated in 3 (b).
satu eksperimen untuk menyiasat hipotesis yang dinyatakan di 3(b).
.
In your description, state clearly the following :
Dalam penerangan anda nyatakan dengan jelas perkara berikut
(i)
The aim of an experiment
Tujuan eksperimen
(ii)
The variable in experiment
Pembolehubah dalam eksperimen
(iii)
The list of apparatus and materials
(iv)
The arrangement of the apparatus
(v)
The procedure of the experiment, which includes one method of controlling the
manipulated variable and one method of measuring the responding variable
Prosedur eksperimen yang mesti termasuk satu kaedah mengawal pemboleh ubah
dimanipulasikan dan satu kaedah mengukur pemboleh ubah bergerak balas.
(vi)
The way to tabulate the data
(vii)
The way to analyse the data
Cara menganalisis data
[10 marks]
[10 markah]
4
Diagram 4.1 and 4.2 show a computer and a hand phone chargers are connected to power supply
240 V separately. The computer and the hand phone charger only need the voltage of 12V and
9V respectively.
Rajah 4.1 dan 4.2 menunjukkan sebuah pengecas computer dan telefon mudah alih
disambungkan kepada bekalan kuasa 240 V secara berasingan . pengecas computer dan telefon
mudah alih itu masing-masing memerlukan voltan 12 V dan 9 V.
Power supply, 240V
Bekalan kuasa 240V
Power supply, 240V
Bekalan kuasa 240V
secondary coil
gegelung sekunder
output 9V
output , 9V
output 12V
output 12V
secondary coil
gegelung sekunder
to handphone
ke telefon bimbit
to computer
ke komputer
Diagram 4.1
Rajah 4.1
Diagram 4.2
Rajah 4.2
The step down transformer that is installed in the computer and the hand phone chargers
decreased the voltage supplied from 240 V as output voltage of 12 V and 9 V respectively. The
number of turn of the secondary coil for transformer in the computer is more than in the hand
phone charger.
voltan bekalan kuasa 240V kepada voltan output 12 V dan 9 V. Bilangan lilitan gegelung
telefon.
Based on the information and observation:
Berdasarkan maklumat dan pemerhatian:
(a)
(b)
State one suitable inference
Nyatakan satu inferens yang sesuai.
[1 mark]
[1 markah]
State one suitable hypothesis.
Nyatakan satu hipotesis yang sesuai.
[1 mark]
[1 markah]
(c)
With the use of apparatus such as low a.c power supply, a.c voltmeter, soft iron core ,
insulated copper wire and other apparatus, describe one experiment to investigate the
hypothesis stated in 4(b).
Dengan menggunakan radas seperti bekalan kuasa arus ulangalik, voltmeter a.u, teras
besi lembut, dawai kuprum tidak bertebat, dan radas lain, huraikan satu eksperimen
untuk menyiasat hipotesis yang dinyatakan di 4(b).
In your description, state clearly the following:
Dalam penerangan anda, nyatakan dengan jelas perkara berikut:
`
(i)
The aim of the experiment
Tujuan eksperimen
(ii)
The variables in the experiment
Pembolehubah dalam eksperimen
(iii)
The list of apparatus and materials
(iv)
The arrangement of the apparatus
(v)
The procedure used in the experiment. Describe how to control
the manipulated variable and how to measure the responding variable
Prosedur yang digunakan dalam eksperimen. Terangkan bagaimana mengawal
pembolehubah dimanipulasi dan bagaimana mengukur pembolehubah
bergerak balas.
(vi)
The way to tabulate the data
(vii)
The way to analyse the data
Cara untuk menganalisis data
[10 marks]
[10 markah]
END OF QUESTION
KERTAS SOALAN TAMAT
SECTION A
Question
Mark Scheme
Sub
Mark
Total
Mark
1
1(a)
mass
1
(b)(i)
Diagram 1.3
1
b(ii)
The smallest scale division is smaller // D1.2 reads until 0.1
kg, D1.3 reads until 10 g
Do repeated readings and find the average value // eyes is
perpendicular/in line with the scale of readings when taking
measurements
1
2
1
1
TOTAL
4M
Transverse / Plane waves
1
1
M1
1
(c)
2 (a)
(b)
Show the path is not bended when enter the shallow
area and is bended away from the normal line when
enter the deep area
Show the wavelength is decreased in shallow area
and is equal in deep area
M2
1
2
(c)
1
=
4.5 m (answer with correct unit)
3 (a)
(b)
(c)(i)
(ii)
(d)
1
2
TOTAL
5M
A substance which has unstable nucleus and always decays
Beta particle
1
1
1
1
The cardboard sheet is thicker.
Less number of beta particle can penetrate the thicker
cardboard
M1 100 g  50 g  25 g  12.5 g
1
√
M2
//
3 years
1
2
1
1
TOTAL
2
6M
Question
Mark Scheme
Sub
Mark
Transistor npn
To switch on the secondary circuit
1
1
(ii)
To limit the current flow
1
(c)
V2
R2
=
6 R2 + 1500
1
4 (a)
(b)(i)
(d)(i)
(ii)
R 2 = 750 Ω
Not lighted up
1
Resistance of LDR decreases, voltage at base/ V 2 is small
1
1
(b)(i)
Diagram 5.2 > Diagram 5.1 // vice versa
1
(b)(ii)
Diagram 5.2 > Diagram 5.1 / vice versa // y 2 > y 1 / vice
versa
same
1
(c)(ii)
(d)(i)
Decreases
1
(d)(ii)
Spring is stiffer // total K is increases
1
(b)(i)
3
1
Mass increases, extension increases (accept if using
symbol)
Hooke’s law // F α x/y if elastic limit is not exceed
Current produced due to the change/cutting of magnetic
flux // Current produced when there is a relative motion
between the coil and magnet
Changes / Cutting of magnetic flux
2
1
1
6(a)
2
7M
Quantity of matter
(c)(i)
2
TOTAL
5(a)
(b)(iii)
Total
Mark
1
1
2
1
2
TOTAL
8M
1
1
1
1
1
1
1
(b)(ii)
(b)(iii)
Lenz’s law
1
(c)(i)
Diagram 6.2 > Diagram 6.1 // vice versa
1
(c)(ii)
Diagram 6.2 > Diagram 6.1 // vice versa
1
(d)(i)
Number of turns increases, deflection increases
1
2
Question
(d)(ii)
7(a)
Sub
Mark
Mark Scheme
Number of turns increases, magnitude of current flows
increases
Reflection
(b)(i)
2
TOTAL
8M
1
1
M1 light from
object is
reflected
M2 Observer sees
image in a
straight line
(b)(ii)
Upright// same size// virtual
(c)(i)
M1
n
M2
1.49 // 1.5
(c)(ii)
1
Total
Mark
2
3
1
=
Total internal reflection // Reflect completely into the glass
2
1
(c)(iii)
1
(d)(i)
1
(d)(ii)
8 (a)(i)
(a)(ii)
Avoid multiple image // image is brighter//
To allow total internal reflection occur
1
TOTAL
10 M
The degree of hotness of an object
1
1
M1 1 x 103 (1.0 x 60) = 0.05 c (78 – 20)
1
M2 2.069 x 105 Jkg-1oC-1
1
2
Sub
Mark
Total
Mark
M1 0.05 (2.069 x 105)(78 – θ) = 2.0 (4 200) (θ – 28)
M2 55.6oC
1
1
2
(c)(i)
M1 Polystyrene
M2 Good heat insulator
2
(c)(ii)
M1 Big
M2 Do not easily absorbed heat from surrounding // Not
easily hot // Not easily releases heat to the ice
2
Question
(b)
(c)(iii)
(d)
Mark Scheme
M1 Big
M2 Prevent heat from outside to easily enter
S
6
2
1
1
TOTAL
12 M
SECTION B
9 (a)
Force per unit surface area
1
(b)(i)
The cross sectional area of nozzle in Diagram 9.1 > 9.2
1
(b)(ii)
The distance between two streams of water in 9.1 > 9.2 // x1
> x2
The bigger the cross sectional area the lower the speed of
air // vice-versa
1
The higher the air pressure between the two streams the
longer the distance between two streams of water. // viceversa
The higher the speed of air had blown, the lower the air
pressure between the two streams of water.
M1 Gas flow through a narrow nozzle at high speed
1
M2 Low pressure is created
1
(b)(iii)
(b)(iv)
(b)(v)
(c)
M3 The higher atmospheric pressure draws air into the low
pressure region through air hole
M4 Air mix with gas (undergoes complete combustion)
(d)
1
1
1
1
1
Charateristic
Explanation
Streamlined / aerodynamic
shape
Strong material
Reduce water resistance
1,1
Not easily breaks/damage //
can withstand high
pressure/force
1,1
Not easily rust
1,1
Low rate of rusting
5
4
Has ballast tank
Increase and decrease the
total weight of submarine
1,1
Nuclear energy
Last longer // save cost
1,1
TOTAL
10 (a)
(b)
The number of complete oscillations in 1 second
M1 Amplitude of traces in Diagram 10.1 = Diagram 10.2
M2 Number of complete oscillation in Diagram 10.1 >
Diagram 10.2
M3 Period in Diagram 10.1 < Diagram 10.2
M4 The higher the number of complete oscillations the
shorter the period.
1
5
10
20 M
1
5
M5 The shorter the period the higher the frequency // T =
(c)
M1
M2
M3
M4
(d)
(When someone speaks the) paper cone will vibrating
(The vibrating paper cone will vibrate) the air
molecules
When the paper cone moves to the right, it will
produce a layer of compressed air
When the paper cone moves to the left, it will
produce a layer of rarefaction air
The series of compressions and rarefactions
(produces sound waves)
Charateristic
Explanation
Large diameter of
parabolic disc
The distance of signal
parabolic disc is equal to
the focal length of the
parabolic disc.
Microwave
To focus/converged the
High position from the
ground
Shining / smooth surface
High frequency // high
energy // short wave length
// less diffracted
The signal is not blocked.
Able to reflect the signals
efficiently.
4
4
1,1
1,1
10
1,1
1,1
1,1
TOTAL
20 M
SECTION C
11(a)(i)
(ii)
(b)
A big force acting in a short time
• Place the pile driver at a certain height
• Release the steel pile onto the pile driver
• Causes an impact on the pile driver in a short time
• Produces high impulsive force on the pile driver
Technique//Characteristics
Explanation
Continue to swing the racket
Ball will move further //
after hitting the ball
produce higher impulse
Short time of contact between
the ball and racket
1
1
1
1
1
2
High impulsive force
2
2
High string tension
Nylon
High durability // not easy to
break // more elastic
Q
(c) (i)
High impulsive force // ball
move with high acceleration
20 x 10 -3
= 2 x 10 -2 s
(iii)
F = m(v – u)
t
= 0.1 ( -50-40)
0.02
= - 450 N
2
Continue to swing the racket
after hitting the ball, Short time
of contact between the ball
and racket , High string
tension, Nylon
100 = 0.1 kg
1000
(ii)
2
1
1
1
1
TOTAL
1
20M
12
(a)
The rate of flow of charge
1
(b) (i)
(ii)
Parallel
1
1
(iii) 1. Increases
2. The effective resistance of the circuit decreases.
1
1
(c)
Characteristics
Low melting point
4.2 A
Small diameter
High resistivity
R
(d) (i)
Explanation
easy to melts
little bit higher than the current flow through
the iron ( 1000 / 240 = 4.16 A)
increase the resistance
increase the resistance
Low melting point, ampere value is 4.2 A,
Small diameter high resistivity of wire and
High resistivity
I =
2
2
2
2
2
1
1
= 0.05 A
(ii) (12- 10) W // 2 W
(iii) Efficiency =
%
= 83.3 %
1
1
1
TOTAL 20 M
END OF SCHEME..
PEPERIKSAAN PERCUBAAN KELANTAN SKEMA KERTAS 3
Question
1(a)(i)
(ii)
(iii)
(b) (i)
Mark Scheme
State the manipulated variable
length of wire(conductor/resistor)// l
panjang dawai ( konduktor, perintang) // l
State the responding variable
potential difference// voltage// V
beza keupayaan // voltan // V
State the fixed variable
Diameter wire // thickness//size//temperature// type of
conductor
diameter dawai// ketebalan dawai// saiz dawai//suhu dawai //
jenis dawai
Total
Mark
1
1
1
1
1
1
2
2
1
1
State all value of V
All the value of V are correct ( 2 m )
4 values of V are correct (1m)
l /cm
20
40
60
80
100
(ii)
Sub
Mark
V/V
0.9
1.8
2.7
3.6
4.5
All correct : 2M
4 values correct : 1M
Calculate all value of V
l / cm
20
40
60
80
100
V /V
0.9
1.8
2.7
3.6
4.5
(c) (iii)
Tabulate the data
length ,
potential
l / cm
difference,V/V
20
40
60
80
100
Resistance,R/Ω
0.9
1.8
2.7
3.6
4.5
0.9
1.8
2.7
3.6
4.5
– All topic or symbol, l , V and R are tabulated
- All correct unit given for l, V, and R
- Values of V are consistent.
- Values of V are consistent.
(d)
4
4
5
5
Draw a Graph
 – State the correct topic of axis
Menyatakan tajuk yang betul pada paksi
- State the correct unit
Menyatakan unit yang betul
 - Using an even scale
Menggunakan skala genap:
ex: 1:2 , 1: 5 , 2 : 6
Plot the point correctly
Plot titik dengan betul
 - All the point plotted correctly
Semua titik di pkot dengan betul
 - 4 point polled correctly
4 titik di plot betul.
 - Draw a best fit straight line
Lukis garis penyuaian terbaik
- Use a graph more than 50 %
graf diguna melebihi 50%
Skor (  )
7
5–6
3-4
2
1
0
(e)
Mark
5
4
3
2
1
0
State the correct relationship
R is directly proportional to l.
R berkadar terus dengan l .
[ syarat - graf mesti lalu (0,0) – lain jawapan reject ]
1
1
[ Note : Graf lurus tak lalu (0,0) tapi pelajar jawab,
V increasing linearly to θ - Reject ]
TOTAL
2(a) (i)
(ii)
16
State the changes of M correctly
M increase
M bertambah
1
M1 Show the extrapolation on the graph
1
M2 State the value and unit correctly
10 cm
b(i)
1
2
1
M1 Draw a big triangle on the graph
≥ 8 cm x 8 cm
M2 Correct substitute
1
(50 − 10)
(4 − 0)
M3 Correct answer with correct unit
10 cm
1
1
3
(b)(ii)
c(i)
(c)(ii)
= 1/ 0.1
= 10 D
1
M1 Draw a line on graph
1
38.5 cm // 0.385 m
1
M1 Correct substitute
1 1 1
atau 2.5 = 35 / u
= +
10 u 35
Eyes is perpendicular to the scale of meter rule when taking
measurements// Do the experiment in dark room// repeated
readings of v for same u three time and find the average
value as to increase the accuracy of the readings
2
1
1
2
u = 14.0 cm // 0.14 m
(d)
1
1
1
1
3. (a)
3(b)
State the correct Inference:
The pressure in liquid depends on the density of liquid .
State the correct Hypothesis:
1
1
1
When the density of liquid increases , the pressure also
increases
3(c)(i)
1
State the aim of the experiment :
1
To investigate the relationship between the density of the
liquid and the pressure.
(ii)
(iii)
State the variables in the experiment:
Manipulated variable: density
Responding variable: pressure
1
Fixed variable : depth.
List the apparatus and material
1
Meter rule, manometer, meaasuring cylinder, water, salt,
triple beam balance, thistle funnel, mercury
1
2
1
(iv)
Arrangement of apparatus
Meter rule
Pembaris meter
Rubber tube
Tiub getah
Manometer
Manometer
Measuring
cylinder
Selinder
penyukat
h
1
1
Thistle funnel
Corong tisel
Mercury
Raksa
Rubber membrane
Membran getah
(vi)
Procedure of experiment
State how to control the manipulated variable
The measuring cylinder is filled with water of volume,
V = 250 ml and mixed with salt of mass 10 g.
Immersed the thistle funnel into the water at the depth of
water, h = 30 cm .
1
State how to measure the responding variable
3
Measure the diffrence length of mercury column, y , at the
manometer and record the data.
1
Repeat the experiment
Repeat the experiment with different mass of salt m = 20g ,
30g, 40g and 50g.
1
Tabulating data
mass,m /g
Difference length of
mercury column , y / cm
1
10
20
1
30
40
50
Analysing data
Length, y /cm
// Pressure
1
1
m/g // density
TOTAL
4.
Inference:
The output voltage of the transformer depends on the number
of turns of the secondary coil.
Hypothesis:
The output voltage of the transformer increases as the
number of turns of the secondary coil increases
Aim of the experiment :
To investigate the relationship between the number of turns
of the secondary coil and output voltage of a transformer.
Variables in the experiment:
Manipulated variable: the number of turns of the secondary
coil, N
Responding variable: The output voltage, V
Fixed variable: number of turns of the primary coil and the
input voltage.
List of apparatus and materials:
low a.c power voltage, insulated copper wire, iron-core, a.c
voltmeter and connection wire.
12
1
1
1
1
1
1
1
2
1
1
1
1
Arrangement of the apparatus:
1
Procedure:
The number of turns of the primary coil N p = 150 turns.
The number of turns of the secondary coil N s = 20 turns
The low voltage of a.c power supply is switched on.
The reading of the voltmeter is measured , V
The experiment is repeated with N s = 40, 60, 80 and 100
turns
(accept : step-down transformer)
Tabulating data
Number of turn of
secondary coil, N
20
40
60
80
100
1
3
1
1
1
Output voltage, V / V
1
Analysing data
1
V (V)
1
N
OR
stated : draw a graph V against N
TOTAL
12
END OF SCHEME..
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