A light beam is travelling from Region I to IV (Refer Figure). The refractive index in 4 Regions I

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A light beam is travelling from Region I to IV (Refer Figure). The refractive index in 4 Regions I, II, III and IV are n0, 2/n0 , 6/n0 ​and 8/n0 , respectively. The angle of incidence θ for which the beam just misses entering Region IV is
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Nov
A light beam is travelling from Region I to IV (Refer Figure). The refractive index in 4 Regions I, II, III and IV are n0, 2/n0 , 6/n0 ​and 8/n0 , respectively. The angle of incidence θ for which the beam just misses entering Region IV is 2/n0 6/n0 ​and 8/n0 A light beam is [...]
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Tags: 2/n0 , 6/n0 ​and 8/n0 , A light beam is travelling from Region I to IV (Refer Figure). The refractive index in 4 Regions I , II , III and IV are n0 , respectively. The angle of incidence θ for which the beam just misses entering Region IV is ,