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A and B are two parallel sided transpare...

A and B are two parallel sided transparent slabs of refractive indices `n_(1) " and" n_(2)` respectively. A ray is incident at an angle `theta` on the surface of separation of A and B and after refraction from B into air grazes the surface of B. Then

A

`sin theta = (1)/(n_(2))`

B

`sin theta = (1)/(n_(1))`

C

`sin theta = (n_(2))/(n_(1))`

D

`sin theta = (n_(1))/(n_(2))`

Text Solution

Verified by Experts

The correct Answer is:
B
From Snell.s law 
`n_(1) sin theta = 1`
`sin theta = (1)/(n_(1))`
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