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A ray of light is incident on a 60^(@) p...

A ray of light is incident on a `60^(@)` prism at the minimum of deviation position. The angle of refraction at the first face (i.e. incident face) of the prism is

A

zero

B

`30^@`

C

`45^@`

D

`60^@`

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  18. For a small angled prism, angle of prism A, the angle of minimum devia...

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