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A ray of light travelling inside a recta...

A ray of light travelling inside a rectangular glass block `(mu=sqrt2)` is incident on the glass-air surface at an angle of incidence of `45^@`. The refractive index of air is 1. The ray will

A

will be absorbed by the glass slab

B

will travel in air without any deviation

C

will travel parallel to the interface i.e., the angle of refraction will be ` 90^(@)`

D

will be reflected back in glass

Text Solution

Verified by Experts

The correct Answer is:
C
It is incident at the critical angle `n=(1)/(sin C)=sqrt(2)`.
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