The angle of minimum deviation for a glass prism with `mu=sqrt3` equals the refracting angle of the prism. What is the angle of the prism?

Answer

A

Explanation

Given, `A=delta_m`
Using, `mu=(sin(A+delta_m/2))/sin(A/2)`
We have, `sqrt3=sin((A+A)/2)/sin(A/2)`
or `sqrt3=sinA/sin(A/2)=(2sin/(2).cos/(2))/sin(A/2)`
`:. CosA/(2)=(sqrt3)/2`
`:. A/2=30^@`
or `A=60^@`