1.

A light beam is travelling from Region I to Region IV (refer figure). The refractive index in Region I, II, III and IV are n0,n02,n06andn08 respectively. The angle of incidence θ for which the beam just misses entering Region IV is(IIT-JEE 2008)

Answer»

A light beam is travelling from Region I to Region IV (refer figure). The refractive index in Region I, II, III and IV are n0,n02,n06andn08 respectively. The angle of incidence θ for which the beam just misses entering Region IV is



(IIT-JEE 2008)



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