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MHT CET Physics question

PhysicsRay Optics and Optical InstrumentsMHT CET

A ray of light is incident at an angle 'i' on one face of a thin angled prism. The ray emerges normally from the other face. Refractive index of the glass prism is 'n' and angle of prism is 'A'. The value of 'i' is [MHT-CET 2021]

Answer: (A)

Solution

Normal emergence gives , and for small angles , so

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Question ID VK-069479