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MHT CET Physics question

PhysicsWave OpticsMHT CET

In bi prism experiment, the light of wavelength λ is used to obtain an interference pattern. Then fringe width is at distance from the screen. When the screen is moved towards bi-prism, fringe width becomes at distance . The distance between two virtual images of the slit is [MHT-CET 2020]

Answer: (D)

Solution

and , so and

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Question ID VK-077564