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The refractive index of the material of ...

The refractive index of the material of a prism is `sqrt(2)` and the angle of the prism is `30^(@)`. One of the two refracting surfaces of the prism is made a mirror inwards, by silver coating. A beam of monochromatic light enterying the prism from the other face will retrace its path (after reflection from the silvered surface) if its angle of incidence on the prism is

A

`45^(@)`

B

`60^(@)`

C

`0^(@)`

D

`30^(@)`

Text Solution

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The correct Answer is:
A
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