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MHT CET Physics question

PhysicsRay Optics and Optical InstrumentsMHT CET

A prism having refractive index and refractive angle has one of the refracting surfaces silvered. The beam of light incident on the other refracting surface will retrace its path, if angle of incidence is [MHT-CET 2021]

Answer: (D)

Solution

The ray retraces its path only if it strikes the silvered face normally, so and ; then $

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Question ID VK-069482