A ray of light is incident on the mid-point of a glass prism surface at an angle of 23.4 with the normal. For the glass, n = 1.60, and the prism apex angle is 51.8. What is the angle of incidence at the glass-to-air surface on the side opposite where the ray exits the prism?
a. 39.5
b. 14.4
c. 37.4
d. 28.4
e. 42.7
[Ques. 2] A light ray passes from air through a thin plastic slab (n = 1.77) with parallel sides. If the ray in air makes an angle of 49 with the normal after leaving the slab, what is the angle of incidence for the ray in air as it impinges upon the other side of the slab?
a. 25
b. 49
c. 14
d. 28
e. 87
[Ques. 3] A fish is 1.2 m beneath the surface of a still pond of water. At what maximum angle can the fish look toward the surface (measured with respect to the normal to the surface) in order to see a fisherman sitting on a distant bank? (for water, n = 1.333)
a. 18.6
b. 37.2
c. 48.6
d. The fish will not see the fisherman at any angle.
[Ques. 4] A beam of monochromatic light goes from material 1 with index of refraction n1 into material 2 with index of refraction n2 . The frequency of light in material 1 is f1 and in material 2 is f2 . What is the ratio of f1/f2?
a. n1/n2
b. n2/n1
c. 1
d. The values of n1 and n2 must be known to find the answer.
[Ques. 5] A ray of light is incident on a liquid-to-glass interface at an angle of 34.1. Indices of refraction for the liquid and glass are, respectively, 1.93 and 1.64 . What is the angle of refraction for the ray moving through the glass?
a. 23.9
b. 28.5
c. 41.3
d. 29.0
e. 40.6
[Ques. 6] A ray of light travels from a glass-to-liquid interface at an angle of 23. Indices of refraction for the glass and liquid are, respectively, 1.58 and 1.80 . What is the angle of refraction for the ray moving through the liquid?
a. 26.4
b. 20.1
c. 17.5
d. 20.2
e. 26.2
[Ques. 7] If light from a 336-nm monochromatic source in air is incident upon the surface of fused quartz (n = 1.56) at an angle of 60, what is the wavelength of the ray refracted within the quartz?
a. 138 nm
b. 215 nm
c. 524 nm
d. 818 nm
e. 336 nm
[Ques. 8] Fused quartz has an index of refraction of 1.50 for light from a 678-nm source. What is the speed of light for this wavelength within the quartz? (c = 3.00 108 m/s)
a. 1.50E+8 m/s
b. 2.00E+8 m/s
c. 2.45E+8 m/s
d. 1.33E+8 m/s
e. 1.50E+8 m/s
[Ques. 9] A monochromatic light source emits a wavelength of 403 nm in air. When passing through a liquid, the wavelength reduces to 363 nm. What is the liquid's index of refraction?
a. 1.23
b. 1.05
c. 1.11
d. 1.90
e. 1.81
[Ques. 10] What is the angle of incidence on an air-to-glass boundary if the angle of refraction in the glass (n = 1.52) is 28.0?
a. 18.0
b. 28.0
c. 42.6
d. 45.5
e. 18.4
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