Light strikes a diamond (n = 2.42) immersed in glycerin (n = 1.473) at an angle of 60 relative to the normal to the surface. What is the angle of refraction?
a. 20
b. 60
c. 32
d. 64
e. 15
[Ques. 2] Light strikes a diamond (n = 2.42) at an angle of 60 relative to the normal to the surface. What is the angle of refraction?
a. 21
b. 30
c. 38
d. 69
e. 71
[Ques. 3] An aquarium contains a 5-cm layer of water (n = 1.333) floating on top of carbon tetrachloride (n = 1.461). If the angle of incidence into the water from the carbon tetrachloride is 20, what is the angle of refraction into the air?
a. 20
b. 30
c. 38
d. 69
e. 26
[Ques. 4] An aquarium contains a 5-cm layer of water (n = 1.33) floating on top of carbon tetrachloride (n = 1.461). If the angle of incidence into the water from the air is 30, what is the angle of refraction into the carbon tetrachloride?
a. 58
b. 69
c. 37
d. 20
e. 75
[Ques. 5] A person looks horizontally at the edge of a swimming pool. If its length is 5 m, and the pool is filled to the surface, to what depth (in m) could the observer see? (n for water is 1.33.)
a. 3.2
b. 4.4
c. 2.1
d. 1.0
e. 0.3
[Ques. 6] A diver shines light up to the surface of a flat glass-bottomed boat at an angle of 30 relative to the normal. If the index of refraction of water and glass are 1.33 and 1.5, respectively, at what angle (in degrees) does the light leave the glass (relative to its normal)?
a. 26
b. 35
c. 42
d. 22
e. 48
[Ques. 7] A person in a boat sees a fish in the water (n = 1.33), the light rays making an angle of 40 relative to the water's surface. What is the true angle (in degrees) relative to the water's surface of the same rays when beneath the surface?
a. 40
b. 35
c. 50
d. 55
e. 61
[Ques. 8] Light is refracted through a diamond. If the angle of incidence is 30, and the angle of refraction is 12, what is the index of refraction?
a. 1.3
b. 2.4
c. 2.6
d. 1.8
e. 0.4
[Ques. 9] The speed of light changes when it goes from ethyl alcohol (n = 1.36) to carbon tetrachloride (n = 1.46). The ratio of the speed in carbon tetrachloride to the speed in ethyl alcohol, v2/v1, is
a. 1.99.
b. 1.07.
c. 0.932.
d. 0.511.
e. 0.760.
[Ques. 10] A light ray whose frequency is 6.00 1014 Hz in vacuum is incident on water (n = 1.33). The wavelength of the light after it enters the water is (in nm)
a. 798.
b. 500.
c. 665.
d. 376.
e. 266.
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