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MHT CET Physics question

PhysicsWave OpticsMHT CET

The separation between successive fringes in a double slit arrangement is . If the whole arrangement is dipped under water, what will be the new fringe separation? (The wavelength of light being used is Å)

Answer: (C)

Solution

In water the wavelength becomes with , so the fringe width becomes

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Question ID VK-077315