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A ray of monochormatic light is incident...

A ray of monochormatic light is incident on one refracting face of a prism of angle `75^(@)`. It passes through the prism an is incident on the other at the critical angle. If the refractive index of the material of the prism is `sqrt(2)`, the angle of the first face of the prism is

A

`30^@`

B

`45^@`

C

`60^@`

D

`0^@`

Text Solution

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The correct Answer is:
B
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