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A ray of light passing through a prism h...

A ray of light passing through a prism having refractive index `sqrt(2)` suffers minimum devitation. It is found that the angle of incidence is double the angle of refraction within the prism. Then angle of prism is

A

`45^@`

B

`60^@`

C

`75^@`

D

`90^@`

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