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Question

A prism (μ=3) of refracting angle 30 is coated with a thin film of transparent material of refractive index 2.2 on face AC of the prism. A light of wavelength 6600Ais incident on face AB such that angle of incidence is 60, then angle of emergence is

6702_0348c09254344792a8a1c2909919bd9d.png

A
0
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B
90
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C
60
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D
30
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Solution

The correct option is B 0
From Snells law we have,
1×sin60o=3sinr1
r1=30o
From A=r1+r2
r2=0o
Therefore, i2=0o

146131_6702_ans_16763b6eb956444c8f945fc47fe64086.png

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