Under minimum deviation condition in a prism, if a ray is incident at an angle `30^(@)`, the angle between the emergent ray and the second refracting surface of the prism is

Options

A. `0^(@)`
B. `30^(@)`
C. `45^(@)`
D. `60^(@)`

Answer

D

Explanation

(d) Under minimum deviation, i=e=`30^(@)`, so as angle between emergent ray and second refracting surface is,
`90^(@)-30^(@)=60^(@)`.