A ray of light travelling in a transparent medium of refractive index $\mu$ falls, on a surface separating the medium from air at an angle of incidence of 45$°$.For which of the following value of $\mu$ the ray can undergo total internal reflection?

(a) $\mu =1.33$                             (b) $\mu =1.40$

(c) $\mu =1.50$                             (d) $\mu =1.25$

Explanation is a part of a Paid Course. To view Explanation Please buy the course.

Difficulty Level: