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The refracting angle of a prism is A, an...

The refracting angle of a prism is A, and refractive index of the material of the prism is `cot (A/2)`. The angle of minimum deviation is

A

`180^@ - A`

B

`180^@ - 2A`

C

`90^@ - A`

D

`A/2`

Text Solution

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The correct Answer is:
B
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