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MHT CET Physics question

PhysicsWave OpticsMHT CET

A double slit experiment is immersed in water of refractive index 1.33. The slit separation is 1 mm, distance between slit and screen is 1.33 m. The slits are illuminated by a light of wavelength 6300Å. The fringe width is [MHT-CET 2022]

Answer: (B)

Solution

In water Å, so $β=λ'

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Question ID VK-077491