Question

A ray of light is incident normally on one of the faces of a prism of apex angle and refractive index . The angle of deviation of the ray is 

A

B

C

D

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Updated on : 2022-09-05
Solution
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Correct option is C)

Using geometry in the figure,  we get incident angle at prism face AC    

Snell's law at P :        

               

Thus deviation of ray:    

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