Optics Question 977

Question: A ray of light propagates from glass (refractive index = 3/2) to water (refractive index = 4/3). The value of the critical angle

[JIPMER 1999; UPSEAT 2001; MP PMT 2000, 03]

Options:

A) sin-1(1/2)

B) sin1(89)

C) sin1(8/9)

D) sin1(5/7)

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Answer:

Correct Answer: C

Solution:

C=sin1(1wμg)=sin1(μwμg)=sin1(89)



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