Question

A ray of light travelling in a transparent medium of refractive index n falls, on a surface separating the medium from air at an angle of incidents of 45°. The ray can undergo total internal reflection for the following n.

विकल्प

• n = 1.25

• n = 1.33

• n = 1.4

• n = 1.5

Answer 1

n = 1.5