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MHT CET Physics question

PhysicsRay Optics and Optical InstrumentsMHT CET

The critical angle for light going from medium A into medium B is . The speed of light in the medium A is . What is the speed of light in the medium B? [MHT-CET 2020]

Answer: (D)

Solution

, so ; the forms with

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Question ID VK-069505