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Solution


Q.

The refractive index of prism is μ=3 and the ratio of the angle of minimum deviation to the angle of prism is one. The value of angle of prism is _____°.           [2024]

Ans.

(60)

δ=i+e-A and δA=1; δ=A

A=i+e-A

i+e=2A and for δmin, i=e

So, i=e=A

By Snell's law at the first surface of prism

1·sinA=3·sin(A2)⇒A=60°