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A ray of light falls on the surface of a...

A ray of light falls on the surface of a spherical glass paper weight making an angle `alpha` with the normal and is refracted in the medium at an angle `beta`. The angle of deviation of the emergent ray from the direction of the incident ray

A

`(alpha-beta)`

B

`2(alpha-beta)`

C

`(alpha-beta)//2`

D

`(beta-alpha)`

Text Solution

Verified by Experts

The correct Answer is:
B
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