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A ray of light travelling in glass havin...

A ray of light travelling in glass having refractive index `_(a)mu_(g)=3//2` is incident at a critical angle C on the glass air interface. If a thin layer of water is poured on glass air interface, then what will be the angle of emergence of this ray in air when it emerges from water air inteface?

A

`180^@`

B

`0^@`

C

`90^@`

D

`45^@`

Text Solution

Verified by Experts

The correct Answer is:
C
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