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Agniveer Vayu or IAF Group X 19 Jan 2023 Paper

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Question : 23

Total: 70

If the refractive index of water is ‌

and that of glass is ‌

, then the critical angle of incidence for light tending to go from glass to water is:

sin^-1 (‌
3
4
)
sin-1 (‌
3
5
)
sin-1 (‌
4
5
)
sin-1 (‌
2
3
)

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