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MHT CET Physics question

PhysicsRay Optics and Optical InstrumentsMHT CET

A ray of light travelling in a medium of refractive index , is incident at an angle on a composite transparent plate consisting of three plates of refractive indices , and . The ray emerges from the composite plate into a medium of refractive index , at angle . Then,

Answer: (B)

Solution

For parallel-sided plates , so ; (a)

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Question ID VK-069308