question_answer

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\[45{}^\circ \]. For which of the following value of p the ray can undergo total internal reflection?   [AIPMT (S) 2010]

A)  \[\mu =1.33\]   

B)  \[\mu =1.40\]

C)  \[\mu =1.50\]   

D)       \[\mu =1.25\]

Correct Answer: C

Solution :

For total internal reflection