Question 1

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. B

Question 2

If a proton and an electron have identical momenta,the longer wavelength belongs to the

Accepted Answer

A) proton. 
B) electron. 
C) both the same 
A) proton. 
B) electron. 
C) both the same C

Question 3

Which of the following photons has the greatest energy?

Accepted Answer

A) infrared 
B) red light 
C) green light 
D) blue light 
E) ultraviolet 
A) infrared 
B) red light 
C) green light 
D) blue light 
E) ultraviolet E

Question 4

According to quantum physics,measuring the velocity of a tiny particle with an electromagnet

Accepted Answer

A) affects the velocity of the particle. 
B) has no effect on the velocity of the particle. 
A) affects the velocity of the particle. 
B) has no effect on the velocity of the particle.

Question 5

A quantum of light is called a(n)

Accepted Answer

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

Question 6

An electron and a baseball move at the same speed.Which has the longer wavelength?

Accepted Answer

A) the electron 
B) the baseball 
C) Both have the same wavelength. 
A) the electron 
B) the baseball 
C) Both have the same wavelength.

Question 7

According to the correspondence principle,a new theory is valid if it

Accepted Answer

A) overlaps and agrees where the old theory works. 
B) accounts for confirmed results from the old theory. 
C) predicts the same correct results as the old theory. 
D) all of these 
E) none of these 
A) overlaps and agrees where the old theory works. 
B) accounts for confirmed results from the old theory. 
C) predicts the same correct results as the old theory. 
D) all of these 
E) none of these

Question 8

The uncertainty principle applies not only to momentum and position,but also to energy and time.This statement is

Accepted Answer

A) True 
 B)False

Question 9

An electron and a proton are traveling at the same speed.Which has the longer wavelength?

Accepted Answer

A) the electron 
B) the proton 
C) Both have the same wavelength. 
A) the electron 
B) the proton 
C) Both have the same wavelength.

Question 10

In the photoelectric effect,the brighter the illuminating light on a photosensitive surface,the greater the

Accepted Answer

A) number of ejected electrons. 
B) velocity of ejected electrons. 
C) both of these 
D) neither of these 
A) number of ejected electrons. 
B) velocity of ejected electrons. 
C) both of these 
D) neither of these

Question 11

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 12

A bullet and a proton have the same momentum.Which has the longer wavelength?

Accepted Answer

A) the bullet 
B) the proton 
C) Both have the same wavelength. 
A) the bullet 
B) the proton 
C) Both have the same wavelength.

Question 13

Light behaves primarily as a wave when it

Accepted Answer

A) travels from one place to another. 
B) interacts with matter. 
A) travels from one place to another. 
B) interacts with matter.

Question 14

In the photoelectric effect,the greater the frequency of the illuminating light,the greater the

Accepted Answer

A) number of ejected electrons. 
B) maximum velocity of ejected electrons. 
C) both of these 
D) neither of these 
A) number of ejected electrons. 
B) maximum velocity of ejected electrons. 
C) both of these 
D) neither of these

Question 15

According to quantum physics,measuring the temperature of lava from a distant volcano by photographing its color with a telescopic camera

Accepted Answer

A) affects the temperature of the lava. 
B) has no effect on the temperature of the lava. 
A) affects the temperature of the lava. 
B) has no effect on the temperature of the lava.

Question 16

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

Accepted Answer

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

Question 17

A lump of energy associated with light is called a

Accepted Answer

A) quantum. 
B) photon. 
C) both of these 
D) neither of these 
A) quantum. 
B) photon. 
C) both of these 
D) neither of these

Question 18

According to quantum physics,looking at a star through a telescope

Accepted Answer

A) affects the processes occurring in the star. 
B) has no effect on the processes occurring in the star. 
A) affects the processes occurring in the star. 
B) has no effect on the processes occurring in the star.

Question 19

Which experiment best demonstrates the particle-like nature of light?

Accepted Answer

A) photoelectric effect 
B) double-slit experiment 
C) neither 
A) photoelectric effect 
B) double-slit experiment 
C) neither

Question 20

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

Accepted Answer

A) speed. 
B) momentum. 
C) kinetic energy. 
D) all of these 
E) none of these 
A) speed. 
B) momentum. 
C) kinetic energy. 
D) all of these 
E) none of these

Exam 31: Light Quanta

Which has more energy per photon?

If a proton and an electron have identical momenta,the longer wavelength belongs to the

Which of the following photons has the greatest energy?

According to quantum physics,measuring the velocity of a tiny particle with an electromagnet

A quantum of light is called a(n)

An electron and a baseball move at the same speed.Which has the longer wavelength?

According to the correspondence principle,a new theory is valid if it

The uncertainty principle applies not only to momentum and position,but also to energy and time.This statement is

An electron and a proton are traveling at the same speed.Which has the longer wavelength?

In the photoelectric effect,the brighter the illuminating light on a photosensitive surface,the greater the

The photoelectric effect best demonstrates the

A bullet and a proton have the same momentum.Which has the longer wavelength?

Light behaves primarily as a wave when it

In the photoelectric effect,the greater the frequency of the illuminating light,the greater the

According to quantum physics,measuring the temperature of lava from a distant volcano by photographing its color with a telescopic camera

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

A lump of energy associated with light is called a

According to quantum physics,looking at a star through a telescope

Which experiment best demonstrates the particle-like nature of light?

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

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