A ray of monochromatic light is incident on the face AB of prism ABCD near vertex B at an incident angle of 60° (see figure). If the refractive index of the material of the prism is √3, which of the following is (are) correct?

Using Snell's law at surface AB:

sin i / sin r = μ

sin 60° / sin r = √3

sin r = sin 60° / √3 = (√3/2) / √3 = 1/2

r = 30°

Angle of prism A = 60°

Angle of refraction at AB = 30°

Angle of incidence at AD = 60° - 30° = 30°

Angle of refraction at AD = 60°

The ray comes out through face AD.

At surface AC:

Angle of incidence = 30°

Critical angle = sin⁻¹(1/√3) ≈ 35.26°

Since the angle of incidence (30°) is less than the critical angle, total internal reflection does not occur.

Angle between incident ray and emergent ray = 180° - 60° = 120°