Question

A ray of light is incident on a plane boundary from a medium of refractive index μ₁ . The refractive index of second medium is μ₂ (μ₁ > μ₂)  . The ray is partially reflected and partially refracted. The reflected and the refracted rays are mutually perpendicular. What is angle of incidence?

Answer 1

Correct answer is \(tan^{-1}(\frac{μ_2}{μ_1})\)