A light ray is incident from a medium of refractive index 2 into a medium of refractive index 3 . The critical angle is

Step-by-step solution

Given, absolute refractive index of medium-1 and 2 are given as ₁=2 and ₂= 3 Let i_c be the critical angle, then i_c= 1 2 ₁ aligned & = 1 ₁ ₂ = 1 2 / 3 & = 3 2 i_c & = 60^ i_c & =60^ aligned