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MHT CET Physics question

PhysicsWave OpticsMHT CET

A glass slab of thickness 4 cm contains the same number of waves as X cm of water column when both are transversed by the same monochromatic light. If the refractive indices of glass and water (for that light) are 5/3 and 4/3 respectively, the value of X will be

Answer: (D)

Solution

Equal number of waves means μ_g = μ_w X, so (5/3)(4) = (4/3)X giving X = 5 cm; the

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Question ID VK-076955