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Q.

The critical angle for light going from medium X into medium Y is θ. The speed of light in medium X is ν. The speed of light in medium Y is

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a

ν cos θ

b

ν/ cos θ

c

ν sin θ

d

ν / sin θ

answer is D.

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Detailed Solution

Clearly, x is denser medium. Now, sin⁡θsin⁡90∘=1 YμX=XμY=vv′orv′=vsin⁡θ
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