Question

A ray of light is incident on a glass slab at an angle of incidence of 60°. If the angle of refraction be 32.7°, calculate the refractive index of glass.

Answer 1

Given: Angle of incidence (i) = 60°

Angle of refraction (r) = 32.7°

By using snell’s law:

μ = `(sin i)/(sin r)`

⇒ μ = `(sin 60^\circ)/(sin 32.7^\circ)`

⇒ μ = 0.866/0.540

⇒ μ ≈ 1.60