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A ray is incident at an angle of inciden...

A ray is incident at an angle of incidence i on one surfcae of a small angle prism (with angle of prism A) and emerges normally from opposite surface. If refractive index of material of prism is `mu` then the angle of incidence is nearly equal to

A

`A/(2mu)`

B

`(2A)/(mu)`

C

`mu A`

D

`(mu A)/2`

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