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A light ray is incident on a transparent...

A light ray is incident on a transparent sphere of index = `sqrt(2)` , at an angle of incidence =`45^(@)` , What is the deviation of a tiny fraction of the ray, which enters the sphere, undergoes two internal reflections and then refracts out into air?

A

`270^(@)`

B

`240^(@)`

C

`120^(@)`

D

`180^(@)`

Text Solution

Verified by Experts

The correct Answer is:
A

From Snell's law
`1, "sin" 45^(@) = sqrt(2) "sin"r , r= 30^(@)`
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