1.
Light is a
wave because
a. It travels in a straight line
b. It has a finite speed
c. It goes around objects (to a certain extent)
d. It has infinite speed
2.
Denoting by
G=gamma rays; I=infrared; U=ultraviolet; V=visible; X=X-ray; a list of waves in
order of increasing frequency is
a. I-V-U-X-G
b. X-I-V-U-G
c. G-X-U-V-I
d. G-U-V-I-X
3.
Suppose that the
ether does exist and that an alien species manages to extract all the ether
from the region between the earth and the Moon, then
a. The tides would decrease a lot but nothing else would change
b. The orbit of the Moon around the Earth would change
c. There would be no change in the tides, but the Moon would disappear from view
d. The tides would increase dramatically
4.
The
Michelson-Morley experiment was designed to measure
a. The speed of light
b. The wave nature of light
c. The gravitational effects on light
d. The motion of the Earth through the ether
5.
Light and
sound,
a. Are different: sound is a wave but light is not since it propagates in the vacuum
b. Move at the same speed
c. Are different: sound is a wave but light is not since it does not “go around corners”
d. Are both waves, for example, they both go around obstacles
6.
The wavelength
and the frequency of a wave are
a. Frequency: number of crests per unit time. Wavelength: distance between crests
b. Wavelength: number of crests per unit time. Frequency: distance between crests
c. They both represent the time between two crests
d. They both represent the distance between two crests
7.
Does sound
need a medium to propagate? Does light?
a. Both need a medium
b. Sound does, but light does not
c. Light does but sound does not
d. Neither
8.
What was the
ether supposed to be? Suppose you are on the Moon and that you believe in the
ether theory, would you expect an ether wind?
a. The ether was supposed to be the medium in which light propagates. If it exists there would be an ether wind on the Moon.
b. The ether was supposed to allow light to propagate in the air; since there is no air on the Moon there would not be an ether wind there
c. The ether was supposed to be the substance in which gravity travels, it would then be only near heavy objects, and therefore not near the Moon
d. The ether was supposed to be a medium that prevented light from traveling. If it exists it would be present only on the dark side of the Moon, where it would generate an ether wind.
9.
Mr. S is
standing on a field facing Mr. F who is standing some distance away. A wind is blowing in Mr. S’s face and they are
both shouting at each other; then
a. Both light and sound take longer going form S to F than the other way
b. Both light and sound take the same time going from S to F than the other way
c. Sound takes longer to get from S to F than from F to S, but light takes the same time to travel from S to F than from F to S.
d. Sound takes longer from F to S than from S to F, while light takes more or less time from F to S than the other way depending on the way the ether wind is blowing.
10. What is the difference between microwaves
and X-rays?
a. Their speed
b. Their very nature: X-rays are like light, microwaves are like sound
c. Their very nature: X-rays are like sound, microwaves are like light
d. Their wavelength