Question 1

What can exist in the same place at the same time?

Accepted Answer

A) two large boulders 
B) two tiny boulders 
C) two waves 
D) all of the above 
E) none of the above 
A) two large boulders 
B) two tiny boulders 
C) two waves 
D) all of the above 
E) none of the above C

Question 2

Three-dimensional viewing was popular in the past with slide projectors. If the slides for left and right positions in the stereo projector are duplicates of each other

Accepted Answer

A) depth can be seen. 
B) no depth can be seen. 
C) only parallax can be seen. 
A) depth can be seen. 
B) no depth can be seen. 
C) only parallax can be seen. B

Question 3

Diffraction from foghorns is best if the waves being diffracted are

Accepted Answer

A) long. 
B) short. 
C) either of these 
D) neither of these 
A) long. 
B) short. 
C) either of these 
D) neither of these A

Question 4

The device that spreads light into its component colors in a spectroscope is a

Accepted Answer

A) prism. 
B) diffraction grating. 
C) either of these 
D) neither of these 
A) prism. 
B) diffraction grating. 
C) either of these 
D) neither of these

Question 5

Successive bright fringes in an interference pattern result from

Accepted Answer

A) equal-length distances from the slits. 
B) distance from the slits successively increasing one wavelength at a time. 
C) destructive interference. 
D) none of the above 
A) equal-length distances from the slits. 
B) distance from the slits successively increasing one wavelength at a time. 
C) destructive interference. 
D) none of the above

Question 6

An inventor proposes to equip an office with a polarized source of background music and polarizing earplugs for non-listeners. His idea is

Accepted Answer

A) a good one that provides personal choice. 
B) too expensive. 
C) bothersome. 
D) nonsense because sound cannot be polarized. 
A) a good one that provides personal choice. 
B) too expensive. 
C) bothersome. 
D) nonsense because sound cannot be polarized.

Question 7

Huygens' principle applies mainly to

Accepted Answer

A) refraction of waves in a medium. 
B) reflection of waves. 
C) both of these 
D) neither of these 
A) refraction of waves in a medium. 
B) reflection of waves. 
C) both of these 
D) neither of these

Question 8

Newton's rings illustrate

Accepted Answer

A) refraction. 
B) reflection. 
C) dispersion. 
D) polarization. 
E) interference. 
A) refraction. 
B) reflection. 
C) dispersion. 
D) polarization. 
E) interference.

Question 9

Diffraction is most closely related to

Accepted Answer

A) refraction. 
B) reflection. 
C) interference. 
D) polarization. 
E) dispersion. 
A) refraction. 
B) reflection. 
C) interference. 
D) polarization. 
E) dispersion.

Question 10

When you view color in a soap film with sunlight in back of you, a friend on the other side of the soap film likely sees

Accepted Answer

A) the same color. 
B) a different color. 
C) only your head. 
A) the same color. 
B) a different color. 
C) only your head.

Question 11

Consider the interference colors in a film of gasoline on a wet street. The water provides a

Accepted Answer

A) means of spreading the gasoline into a thin film. 
B) means of slowing the rapid evaporation of gasoline. 
C) chemical bond with the gasoline. 
D) second reflecting surface. 
E) all of the above 
A) means of spreading the gasoline into a thin film. 
B) means of slowing the rapid evaporation of gasoline. 
C) chemical bond with the gasoline. 
D) second reflecting surface. 
E) all of the above

Question 12

For a pair of Polaroids with axes at 45 degrees to each other

Accepted Answer

A) light will not pass. 
B) light that passes is dimmer than for a parallel orientation. 
C) another Polaroid is necessary for any light to pass. 
A) light will not pass. 
B) light that passes is dimmer than for a parallel orientation. 
C) another Polaroid is necessary for any light to pass.

Question 13

When long-wavelength light is seen in the interference colors of a soap bubble, the wavelength being cancelled is relatively

Accepted Answer

A) long. 
B) short. 
C) neither of these 
A) long. 
B) short. 
C) neither of these

Question 14

Holograms employ the principle of

Accepted Answer

A) diffraction. 
B) interference. 
C) both of these 
D) neither of these 
A) diffraction. 
B) interference. 
C) both of these 
D) neither of these

Question 15

Secondary wavelets spread from a wave with

Accepted Answer

A) reduced speed. 
B) an unchanging speed. 
C) an increased speed. 
D) none of the above 
A) reduced speed. 
B) an unchanging speed. 
C) an increased speed. 
D) none of the above

Question 16

According to Huygens' principle, every point on a wave

Accepted Answer

A) is a diffraction source. 
B) behaves as a source of new waves. 
C) is the superposition of every other part of the wave. 
D) all of the above 
E) none of the above 
A) is a diffraction source. 
B) behaves as a source of new waves. 
C) is the superposition of every other part of the wave. 
D) all of the above 
E) none of the above

Question 17

For viewing tiny objects in a microscope, diffraction is

Accepted Answer

A) helpful. 
B) a hindrance. 
C) not a factor. 
A) helpful. 
B) a hindrance. 
C) not a factor.

Question 18

The fanning out of waves upon passing through an opening is more pronounced through

Accepted Answer

A) small openings. 
B) large openings. 
C) same for each 
D) none of the above 
A) small openings. 
B) large openings. 
C) same for each 
D) none of the above

Question 19

A hologram is simply a

Accepted Answer

A) complex diffraction grating. 
B) thin sheet of non-cubic transparent crystals. 
C) pair of semi-crossed polarization filters. 
D) thin photographic film with microscopic images over the entire surface. 
E) none of the above 
A) complex diffraction grating. 
B) thin sheet of non-cubic transparent crystals. 
C) pair of semi-crossed polarization filters. 
D) thin photographic film with microscopic images over the entire surface. 
E) none of the above

Question 20

Diffraction is least when illumination is with

Accepted Answer

A) red light. 
B) blue light. 
C) an electron beam 
D) none of the above 
A) red light. 
B) blue light. 
C) an electron beam 
D) none of the above

Exam 29: Light Waves

What can exist in the same place at the same time?

Three-dimensional viewing was popular in the past with slide projectors. If the slides for left and right positions in the stereo projector are duplicates of each other

Diffraction from foghorns is best if the waves being diffracted are

The device that spreads light into its component colors in a spectroscope is a

Successive bright fringes in an interference pattern result from

An inventor proposes to equip an office with a polarized source of background music and polarizing earplugs for non-listeners. His idea is

Huygens' principle applies mainly to

Newton's rings illustrate

Diffraction is most closely related to

When you view color in a soap film with sunlight in back of you, a friend on the other side of the soap film likely sees

Consider the interference colors in a film of gasoline on a wet street. The water provides a

For a pair of Polaroids with axes at 45 degrees to each other

When long-wavelength light is seen in the interference colors of a soap bubble, the wavelength being cancelled is relatively

Holograms employ the principle of

Secondary wavelets spread from a wave with

According to Huygens' principle, every point on a wave

For viewing tiny objects in a microscope, diffraction is

The fanning out of waves upon passing through an opening is more pronounced through

A hologram is simply a

Diffraction is least when illumination is with

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