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MHT CET Physics question

PhysicsRay Optics and Optical InstrumentsMHT CET

A prism having refractive index 1.414 and refracting angle has one of the refracting surfaces silvered. A beam of light incident on the other refracting surface will retrace its path, if the angle of incidence is

Answer: (D)

Solution

To retrace its path the refracted ray must fall normally on the silvered face, so and ,

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Question ID VK-069357