Answer to Question #170772 in Mechanics | Relativity for Ali Fazal

Question

State two conditions for a light Ray to undergo total internal reflection at a boundary between two transparent substances

Answer 1

Two necessary condition for a light to undergo total internal refraction are:

(1) The ray should transverse from an optically denser medium (greater $\mu$ ) to an optically rarer medium (lesser $\mu$ ).

(2) The angle of incidence of the ray to the normal of the rarer medium should be more than $90\degree$.