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A ray of monochromatic light is incident...

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

A

`0^(@)`

B

`30^(@)`

C

`45^(@)`

D

`60^(@)`

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The correct Answer is:
C
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