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Answer to Question #61514 in Other Physics for hi

Question #61514

7 An estimate of the refractive index of glass is 1.5. If the angle of incidence is
30o
30o
the angle of refraction is

19o
19o

60o
60o

35o
35o

70o
70o
8 The critical angle for total internal reflection at an air - water interface is approximately
48o
48o
. In which of the following situations will total internal reflection occur.
light incident in water at
40o
40o
light incident in water at
55o
55o
light incident in air at
40o
40o
light incident in air at
55o
55o
9 When refraction occurs which of the following remains unchanged?
wave number
wavelength
velocity
frequecy
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