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IIT JEE Advanced 2008 Paper 2

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Question : 1

Total: 66

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,

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

sin−1(
3
4
)
sin−1(
1
8
)
sin−1(
1
4
)
sin−1(
1
3
)

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