Question

A ray of light incident at an angle of incidence 48° on a prism of refracting angle 60° suffers minimum deviation. Calculate the angle of minimum deviation. 

[Hint: δ_min = 2i - A]

Answer 1

Given,

Angle of incidence, i = 48°

refracting angle , A = 60°

Angle of minimun deviation deviation, δ_min  = ?

As δ_min  = 2 i - A

δ_min  = 2 (48) - 60

δ_min  = 36°