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MHT CET Physics question

PhysicsRay Optics and Optical InstrumentsMHT CET

A ray of light is incident at an angle of incidence 'i' on one surface of a thin prism of small angle 'A'. The ray emerges normally from the opposite surface. If the refractive index of the material of the prism is '', the angle of incidence 'i' is nearly equal to [MHT-CET 2021]

Answer: (C)

Solution

Normal emergence gives and ; for small angles r_1$=μ

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Question ID VK-069476