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Question

A ray of light is incident on a denser medium at an angle 60. The angle of refraction is different  for different mediums for the same angle of incidence i.e.  60In which medium the speed of light is slowest?



Your Answer
A

 1

Your Answer
B

2

Correct Answer
C

3

Your Answer
D

Same in all


Solution

The correct option is C

3


Snell's law:

SiniSinrcv (since first medium is air)

For medium 1:  v13c2Sini

For medium 2: v2c2Sini

For medium 3: v3c2Sini

Therefore speed of light is minimum in medium 3

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