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MHT CET Physics question

PhysicsRay Optics and Optical InstrumentsMHT CET

A ray of light travels normally through a glass plate of thickness x and refractive index, . If v is velocity of light in rarer medium then the time taken by it to travel thickness of glass plate is

Answer: (D)

Solution

Speed in glass = v/μ so t = x/(v/μ) = μx/v; (a), (b), (c) do not have

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Question ID VK-076990