A light beam is travelling from Region I to Region IV (refer to the figure). The refractive index in Regions I, II, III and IV are n_0,n_0/6,n_0/6 and n_0/8 , respectively. The angle of incidence θ for which the beam just misses entering Region IV is [JEE Adv 2008 P2]

Correct Answer is : sin−1(18)

IIT JEE Advanced 2008 Paper 2

Section: Physics

Question : 1 of 66

Marks: +1, -0

A light beam is travelling from Region I to Region IV (refer to the figure). The refractive index in Regions I, II, III and IV are n0,

and

, respectively. The angle of incidence θ for which the beam just misses entering Region IV is

[JEE Adv 2008 P2]

Go to Question:

Next Question