Question

For the same angle of incidence in media A,B and C , the angles of a refraction are 20°, 30° and 40° respectively. in which medium will the velocity of light be maximum? Give reason in support of your answer.​

Answer 1

for 20 degree velocity of light will be maximum because lesser the angle greater will be velocity of refaction

Answer 2

From Snell’s law

n = sin i /sin r = c/v

Since c and sin i are constant therefore sin r is directly proportional to v

Therefore velocity of light is maximum in medium C.

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