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A monochromatic light is incident at ...

A monochromatic light is incident at a certain angle on an equilateral triamgular prism and suffers minimum deviation . If the refractive index of the material of the prism is `sqrt(3)`, them the angle of incidence is :

A

`90^(@)`

B

`30^(@)`

C

`60^(@)`

D

`45^(@)`

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