A light ray is incident on a glass sphere at an angle of incidence `60^(@)` as shown. Find the angles `r, f^(1) , e` and the total deviation after two refractions.

Explanation

Snell's Law
`mu_(W) sin theta_(W) = mu_(a) sin theta_(a) rArr (4)/(3) xx (3)/(5) = 1 sin theta_(a)`
`sin theta_(a) = (4)/(5), theta_(a) = sin^(-1) (4)/(5)`