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MHT CET Physics question

PhysicsRay Optics and Optical InstrumentsMHT CET

A light is travelling from air into a medium. Velocity of light in a medium is reduced to times the velocity in air. Assume that angle of incidence '' is very small, the deviation of the ray is

Answer: (C)

Solution

and for small angles , so ; the deviation is

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Question ID VK-077259