1 What is the frequency, in Hz, of electromagnetic

Slide 1 / 49
1
What is the frequency, in Hz, of electromagnetic
radiation that has a wavelength of 0.55 m?
A
5.5 x 108
B
1.8 x 10-9
C
1.6 x 108
D
1.3 x 10-33
E
1.3 x 1033
Slide 2 / 49
2
What is the frequency of light, in Hz, that has a
wavelength of 1.23 x 10-6 cm?
A
3.69
B
2.44 x 1016
C
4.10 x 10-17
D
9.62 x 1012
E
1.04 x 10-13
Slide 3 / 49
3
What is the wavelength of light (nm) that has a
frequency of 3.22 x 1014 Hz?
A
932
B
649
C
8.66 x 1022
D
7.32 x 10-7
E
1.05 x 106
Slide 4 / 49
4
What is the wavelength of light (nm) that has a
frequency 4.25 x 1014 Hz?
A
932
B
706
C
2.39 x 1023
D
1.54 x 10-3
E
1.07 x 106
Slide 5 / 49
5
The wavelength of a photon that has energy of
5.65 x 10-19 J is __________ m.
A
3.59 x 10-7
B
2.64 x 106
C
2.38 x 1023
D
4.21 x 10-24
E
3.79 x 107
Slide 6 / 49
6
The energy of a photon that has a wavelength of
10 m is __________ J.
A
1.99 x 10-26
B
5.5 x 1025
C
6.0 x 10-23
D
2.7 x 109
E
4.5 x 10-25
Slide 7 / 49
7
The energy of a photon that has a frequency of
7.75 x 1014 Hz is __________ J.
A
8.08 x 10-50
B
1.99 x 10-25
C
5.12 x 10-19
D
1.24 x 1049
E
1.26 x 10-19
Slide 8 / 49
8
What is the frequency (Hz) of a photon that has
energy of 4.38 x 10-18 J?
A
436
B
6.61 x 1015
C
1.45 x 10-16
D
2.30 x 107
E
1.31 x 10-9
Slide 9 / 49
9
Of the following, ______ radiation has the longest
wavelength and ______ radiation has the greatest
energy:
X-ray
ultraviolet
visible
A
ultraviolet, X-ray
B
visible, ultraviolet
C
x-ray, x-ray
D
visible, X-ray
E
X-ray, visible
Slide 10 / 49
10 Which one of the following is correct?
A
f+λ=c
B
f/λ=c
C
f=cλ
D
λ = cf
E
fλ =c
Slide 11 / 49
11 The photoelectric effect is __________.
A
the total reflection of light by metals giving them
their typical luster
B
the production of current by silicon solar cells
when exposed to sunlight
C
the ejection of electrons by a metal when struck
with light of sufficient energy
D
the darkening of photographic film when
exposed to an electric field
E
a relativistic effect
Slide 12 / 49
12 The wavelength of light emitted from a traffic light
having a frequency of 6.15 x1014 Hz is _________.
A
702 nm
B
641 nm
C
674 nm
D
487 nm
E
583 nm
Slide 13 / 49
13 A radio station broadcasts at 101.5 MHz. The
wavelength of the signal is __________ m.
A
3.10
B
2.96
C
4.71
D
2.75
E
3.84
Slide 14 / 49
14 The de Broglie wavelength of a 12 gram bullet
traveling at the speed of sound is _________ m.
The speed of sound is 331 m/sec.
A
2.7 x10-34
B
1.67 x10-34
C
3.35 x10-33
D
2.7 x10-37
E
6.6 x10-31
Slide 15 / 49
15 The de Broglie wavelength of a __________ will
have the shortest wavelength when traveling at 30
m/s.
A
marble
B
car
C
earth
D
uranium atom
E
hydrogen atom
Slide 16 / 49
16 Electromagnetic radiation with a wavelength of ___
nm appears as green light to the human eye. The
frequency of this light is 5.71 x1014 Hz.
A
525
B
425
C
650
D
1550
E
571
Slide 17 / 49
17 An FM radio station broadcasts electromagnetic
radiation at a frequency of 99.5 MHz. The
wavelength of this radiation is __________ m.
A
3.01 x106
B
3.01
C
3.018 x1016
D
3.018 x1010
E
0.302
Slide 18 / 49
18 Electromagnetic radiation with a wavelength of
525 nm appears as green light to the human eye.
The energy of one photon of this light is
__________ J.
A
1.04 x10-31
B
3.79 x10-28
C
3.78 x10-19
D
1.04 x10-22
E
2.64 x1018
Slide 19 / 49
19 Electromagnetic radiation with a wavelength of
531 nm appears as green light to the human eye.
The energy of one photon of this light is
3.74 x10-19 J. Thus, a laser that emits 2.3 x10-2 J of
energy in a pulse of light at this wavelength
produces __________ photons in each pulse.
A
6.9 x10-17
B
6.2 x10-24
C
6.8 x1019
D
6.15 x1016
E
6.5 x1013
Slide 20 / 49
20 The de Broglie wavelength of an electron with a
velocity of 6.00 x108 cm/s is __________ m. The
mass of the electron is 9.11 x10-31 kg.
A
8.25 x109
B
8.25 x1012
C
1.21 x10-16
D
1.21 x10-13
E
1.21 x10-10
Slide 21 / 49
21 Which statement below correctly describes the
responses of alpha, beta, and gamma radiation to
an electric field?
A
Both beta and gamma are deflected in the same
direction, while alpha shows no response.
B
Both alpha and gamma are deflected in the
same direction, while beta shows no response.
C
Both alpha and beta are deflected in the same
direction, while gamma shows no response.
D
Alpha and beta are deflected in opposite
directions, while gamma shows no response.
E
Only alpha is deflected, while beta and gamma
show no response.
Slide 22 / 49
22 The subatomic particles in the nucleus are
A
Protons, electrons
B
Electrons, neutrons
C
Protons, neutrons
D
none of the above
E
Neutrons, only neutrons
Slide 23 / 49
23 The ______ and _________ reside in the nucleus of
an atom.
A
electrons
B
protons, neutrons, and electrons
C
protons and neutrons
D
protons and electrons
E
protons
Slide 24 / 49
24 Which one of the following is not true concerning
cathode rays?
A
They originate from the negative electrode.
B
They travel in straight lines in the absence of
electric or magnetic fields.
C
They impart a negative charge to metals
exposed to them.
D
They are made up of electrons.
E
The characteristics of cathode rays depend on
the material from which they are emitted.
Slide 25 / 49
25 The determination of charge of an electron is
related to which of the following?
A
cathode ray tube, by J. J. Thompson
B
Rutherford gold foil experiment
C
Millikan oil drop experiment
D
Dalton atomic theory
E
atomic theory of matter
Slide 26 / 49
26 Fast-moving electrons are ___________ particles.
A
Alpha
B
Beta
C
Gamma
D
X
E
none of the above
Slide 27 / 49
27 The gold foil experiment __________.
A
confirmed the plum-pudding model of the atom
B
led to the discovery of the atomic nucleus
C
was the basis for Thomson's model of the atom
D
utilized the deflection of beta particles by gold
foil
E
proved the law of multiple proportions
Slide 28 / 49
28 In the Rutherford nuclear-atom model,
__________.
A
the heavy subatomic particles, protons and
neutrons, reside in the nucleus
B
the three principal subatomic particles (protons,
neutrons, and electrons) all have essentially the
same mass
C
the light subatomic particles, protons and
neutrons, reside in the nucleus
D
mass is spread essentially uniformly throughout
the atom
E
the three principal subatomic particles (protons,
neutrons, and electrons) all have essentially the
same mass and mass is spread essentially
uniformly throughout the atom
Slide 29 / 49
29 Cathode rays are __________.
A
neutrons
B
x-rays
C
electrons
D
protons
E
atoms
Slide 30 / 49
30 Cathode rays are deflected away from a negatively
charged plate because __________.
A
they are not particles
B
they are positively charged particles
C
they are neutral particles
D
they are negatively charged particles
E
they are emitted by all matter
Slide 31 / 49
31 In the absence of magnetic or electric fields,
cathode rays __________.
A
do not exist
B
travel in straight lines
C
cannot be detected
D
become positively charged
E
bend toward a light source
Slide 32 / 49
32 Of the three types radioactivity characterized
by Rutherford, which one is/are charged?
A
β-rays
B
α-rays and β-rays
C
α-rays, β-rays, and γ-rays
D
α-rays
E
α-rays and γ-rays
Slide 33 / 49
33 Of the three types of radiation, which one is/are
not electrically charged?
A
α-rays
B
α-rays, β-rays, and γ-rays
C
γ-rays
D
α-rays and β-rays
E
α-rays and γ-rays
Slide 34 / 49
34 Of the three types of radioactivity characterized by
Rutherford, which are particles?
A
β-rays
B
α-rays, β-rays, and γ-rays
C
γ-rays
D
α-rays and γ-rays
E
α-rays and β-rays
Slide 35 / 49
35 Of the three types of radioactivity characterized by
Rutherford, which is/are not particles?
A
β-rays
B
α-rays and β-rays
C
α-rays
D
γ-rays
E
α-rays, β-rays, and γ-rays
Slide 36 / 49
36 Of the following, the smallest and lightest
subatomic particle is the __________.
A
neutron
B
proton
C
electron
D
nucleus
E
alpha particle
Slide 37 / 49
37 All atoms of a given element have the same
__________
A
mass
B
number of protons
C
number of neutrons
D
density
E
number of electrons and neutrons
Slide 38 / 49
38 The nucleus of an atom does not contain
__________.
A
protons
B
protons or neutrons
C
neutrons
D
subatomic particles
E
electrons
Slide 39 / 49
39 The nucleus of an atom contains __________.
A
electrons
B
protons
C
neutrons
D
protons and neutrons
E
protons, neutrons, and electrons
Slide 40 / 49
40 If r1 is the smallest orbital radius around a single
proton, then r4 is equal to
A
16 r1.
B
12 r1.
C
6 r 1.
D
2.45 r1.
E
0.17 r1.
Slide 41 / 49
41 The binding energy of the hydrogen atom in its
ground state is -13.6 eV. What is the energy when
it is in the n = 4 state?
A
2.72 eV
B
-2.72 eV
C
0.544 eV
D
-0.85 eV
E
5.44 eV
Slide 42 / 49
42 A hydrogen atom in the ground state absorbs a
photon of energy 12.09 eV. To which state will the
electron make a transition?
A
n=2
B
n=3
C
n=4
D
n=5
E
n=6
Slide 43 / 49
43 What is the ionization energy of the neutral
hydrogen atom?
A
27.2 eV
B
13.6 eV
C
6.8 eV
D
3.4 eV
E
none of the given answers
Slide 44 / 49
44 In making a transition from state n = 1 to state n =
2, the hydrogen atom must
A
absorb a photon of energy 10.2 eV.
B
emit a photon of energy 10.2 eV.
C
absorb a photon of energy 13.58 eV.
D
emit a photon of energy 13.58 eV.
E
none of the given answers
Slide 45 / 49
45 The electron of a hydrogen atom makes a
transition from the n = 5 state to the n = 2 state.
What is the wavelength of the emitted photon?
A
344 nm
B
430 nm
C
443 nm
D
523 nm
E
235 nm
Slide 46 / 49
46 In state n = 1, the energy of the hydrogen atom is
-13.58 eV. What is its energy in state n = 2?
A
-6.79 eV
B
-4.53 eV
C
-3.40 eV
D
-1.51 eV
E
-0.51 eV
Slide 47 / 49
47 The wavelength of a ruby laser is 694.3 nm. What
is the energy difference between the two energy
states involved in laser action?
A
1.537 eV
B
1.646 eV
C
1.786 eV
D
1.812 eV
E
1.951 eV
Slide 48 / 49
48 An electron is moving about a single proton in an
orbit characterized by n = 4. How many of the
electron's de Broglie wavelengths fit into the
circumference of this orbit?
A
1
B
2
C
4
D
16
E
32
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