When a ray of light passes from air to water, the velocity of light in water is
a)greater than that in air
b)equal to that in air
c)less than that in air
d)can't be predicted
2.The refractive index of a denser medium with respect to a rarer medium is
a) 1
b) less than 1
c) greater than 1
d) negative
The angle of incidence i and angle of refraction r are equal in a transparent slab when the value of i (in degree)is
a) 0
b) 45
c) 60
d) 90
You are given three media A, B and C of refractive index 1.33, 1.65 and 1.46. The medium in which the light will travel fastest is
a) A
b) B
c) C
d) equal in all media
Answers: 3
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How are the crust and the inner core alike? a) they are both solid. b) they both have the same temperature. c) they are both under the same pressure. d) they are both very close to the center of the earth.
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When a ray of light passes from air to water, the velocity of light in water is
a)greater than that...
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