Question 1

A certain object emits infrared waves. If it were to emit light waves instead, its temperature would have to be

Accepted Answer

A)  higher. 
B)  lower. 
C)  the same, temperature doesn't make any difference. 
A)  higher. 
B)  lower. 
C)  the same, temperature doesn't make any difference. A

Question 2

Quantum uncertainties are most predominant for simultaneously measuring the speed and location of

Accepted Answer

A)  a spitball. 
B)  a baseball. 
C)  an electron. 
A)  a spitball. 
B)  a baseball. 
C)  an electron. C

Question 3

Discrete spectral lines occur when excitation takes place in a

Accepted Answer

A)  liquid. 
B)  solid. 
C)  gas. 
D)  superconductor. 
E)  all of these 
A)  liquid. 
B)  solid. 
C)  gas. 
D)  superconductor. 
E)  all of these C

Question 4

Which has more energy per photon?

Accepted Answer

A)  red light 
B)  blue light 
C)  Both have the same energy. 
A)  red light 
B)  blue light 
C)  Both have the same energy.

Question 5

The white light emitted by a fluorescent lamp is provided by the

Accepted Answer

A)  filtering effect of the glass tubing. 
B)  phosphors on the inner surface of the lamp. 
C)  high temperature of the glowing gas. 
D)  mercury vapor in the lamp. 
A)  filtering effect of the glass tubing. 
B)  phosphors on the inner surface of the lamp. 
C)  high temperature of the glowing gas. 
D)  mercury vapor in the lamp.

Question 6

The highest frequency light of those below is

Accepted Answer

A)  red. 
B)  blue. 
C)  green. 
D)  violet. 
E)  all the same 
A)  red. 
B)  blue. 
C)  green. 
D)  violet. 
E)  all the same

Question 7

An atom that emits a certain frequency of light is

Accepted Answer

A)  an absorber of the same frequency. 
B)  not likely to absorb that same frequency. 
A)  an absorber of the same frequency. 
B)  not likely to absorb that same frequency.

Question 8

Orbital electrons do not spiral into the nucleus because of

Accepted Answer

A)  electromagnetic forces. 
B)  angular momentum conservation. 
C)  the wave nature of the electron. 
D)  the large nuclear size compared to the electron's size. 
E)  none of these 
A)  electromagnetic forces. 
B)  angular momentum conservation. 
C)  the wave nature of the electron. 
D)  the large nuclear size compared to the electron's size. 
E)  none of these

Question 9

Fluorescent minerals on display in museums are illuminated with

Accepted Answer

A)  ultraviolet light. 
B)  infrared light. 
C)  often either or both 
D)  none of these 
A)  ultraviolet light. 
B)  infrared light. 
C)  often either or both 
D)  none of these

Question 10

Green light emitted by excited mercury vapor corresponds to a particular energy transition in the mercury atom. A more energetic transition might emit

Accepted Answer

A)  red light. 
B)  blue light. 
C)  white light. 
D)  either red or blue light. 
A)  red light. 
B)  blue light. 
C)  white light. 
D)  either red or blue light.

Question 11

The ratio of a photon's energy to its frequency is

Accepted Answer

A)  its speed. 
B)  its wavelength. 
C)  Planck's constant. 
D)  its amplitude. 
E)  none of these 
A)  its speed. 
B)  its wavelength. 
C)  Planck's constant. 
D)  its amplitude. 
E)  none of these

Question 12

The photoelectric effect best demonstrates the

Accepted Answer

A)  wave nature of light. 
B)  particle nature of light. 
C)  both of these 
D)  none of these 
A)  wave nature of light. 
B)  particle nature of light. 
C)  both of these 
D)  none of these

Question 13

The main visible difference between phosphorescent and fluorescent materials is

Accepted Answer

A)  the greenish color of phosphorescence. 
B)  an afterglow. 
C)  a difference in brightness. 
A)  the greenish color of phosphorescence. 
B)  an afterglow. 
C)  a difference in brightness.

Question 14

According to the uncertainty principle, the more we know about a particle's momentum, the less we know about its

Accepted Answer

A)  speed. 
B)  location. 
C)  mass 
D)  kinetic energy. 
E)  none of these 
A)  speed. 
B)  location. 
C)  mass 
D)  kinetic energy. 
E)  none of these

Question 15

Two photons are emitted as an electron de-excites from the third quantum level to the second, and then to the ground state. The sum of the frequencies of the two photons equals the frequency of the single photon that would be emitted if the de-excitation were from the third to the ground state directly. This is according to

Accepted Answer

A)  the physicist W. Ritz. 
B)  energy conservation. 
C)  both of these 
D)  neither of these 
A)  the physicist W. Ritz. 
B)  energy conservation. 
C)  both of these 
D)  neither of these

Question 16

According to Neils Bohr, an electron in an excited state could give off

Accepted Answer

A)  several photons in a series of transitions to the ground state. 
B)  at most a single photon until the atom was excited again. 
C)  a continuous cascade of photons for a high-level transition. 
D)  none of these 
A)  several photons in a series of transitions to the ground state. 
B)  at most a single photon until the atom was excited again. 
C)  a continuous cascade of photons for a high-level transition. 
D)  none of these

Question 17

Which has less energy per photon?

Accepted Answer

A)  blue light 
B)  red light 
C)  Both have the same energy. 
A)  blue light 
B)  red light 
C)  Both have the same energy.

Question 18

In the equation E = hf, the f stands for

Accepted Answer

A)  frequency characteristic of quantum phenomena. 
B)  the smaller wavelengths of visible light. 
C)  wave frequency as defined for sound, radio, and light waves. 
D)  none of these 
A)  frequency characteristic of quantum phenomena. 
B)  the smaller wavelengths of visible light. 
C)  wave frequency as defined for sound, radio, and light waves. 
D)  none of these

Question 19

A quantum of light is called a

Accepted Answer

A)  notron. 
B)  electron. 
C)  neutron. 
D)  proton. 
E)  none of these 
A)  notron. 
B)  electron. 
C)  neutron. 
D)  proton. 
E)  none of these

Question 20

A hypothetical atom has four distinct energy states. Assuming all transitions are possible, how many spectral lines can this atom produce?

Accepted Answer

A)  6 
B)  7 
C)  5 
D)  8 
E)  more than 8 
A)  6 
B)  7 
C)  5 
D)  8 
E)  more than 8

A certain object emits infrared waves. If it were to emit light waves instead, its temperature would have to be

Quantum uncertainties are most predominant for simultaneously measuring the speed and location of

Discrete spectral lines occur when excitation takes place in a

Which has more energy per photon?

The white light emitted by a fluorescent lamp is provided by the

The highest frequency light of those below is

An atom that emits a certain frequency of light is

Orbital electrons do not spiral into the nucleus because of

Fluorescent minerals on display in museums are illuminated with

Green light emitted by excited mercury vapor corresponds to a particular energy transition in the mercury atom. A more energetic transition might emit

The ratio of a photon's energy to its frequency is

The photoelectric effect best demonstrates the

The main visible difference between phosphorescent and fluorescent materials is

According to the uncertainty principle, the more we know about a particle's momentum, the less we know about its

According to Neils Bohr, an electron in an excited state could give off

Which has less energy per photon?

In the equation E = hf, the f stands for

A quantum of light is called a

A hypothetical atom has four distinct energy states. Assuming all transitions are possible, how many spectral lines can this atom produce?

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Newtons Laws of Motion

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Temperature, Heat, and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Light Waves

Properties of Light

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Exam 15: Quantum Theory

A certain object emits infrared waves. If it were to emit light waves instead, its temperature would have to be

Quantum uncertainties are most predominant for simultaneously measuring the speed and location of

Discrete spectral lines occur when excitation takes place in a

Which has more energy per photon?

The white light emitted by a fluorescent lamp is provided by the

The highest frequency light of those below is

An atom that emits a certain frequency of light is

Orbital electrons do not spiral into the nucleus because of

Fluorescent minerals on display in museums are illuminated with

Green light emitted by excited mercury vapor corresponds to a particular energy transition in the mercury atom. A more energetic transition might emit

The ratio of a photon's energy to its frequency is

The photoelectric effect best demonstrates the

The main visible difference between phosphorescent and fluorescent materials is

According to the uncertainty principle, the more we know about a particle's momentum, the less we know about its

According to Neils Bohr, an electron in an excited state could give off

Which has less energy per photon?

In the equation E = hf, the f stands for

A quantum of light is called a

A hypothetical atom has four distinct energy states. Assuming all transitions are possible, how many spectral lines can this atom produce?

About Science

Atoms

Equilibrium and Linear Motion

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

Temperature, Heat, and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Light Waves

Properties of Light

The Atomic Nucleus and Radioactivity

Physics of Rotation and Equilibrium

Filters