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MHT CET Physics question

PhysicsWave OpticsMHT CET

A monochromatic ray of light travels through glass slab and water column. The number of waves in glass slab of thickness 4 cm is the same as in water column of height 5 cm. If refractive index of glass is then refractive index of water is [MHT-CET 2020]

Answer: (A)

Solution

Equal number of waves means is equal, i.e. :

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Question ID VK-069512