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MHT CET Physics question

PhysicsWave OpticsMHT CET

In a Young's experiment, two coherent sources are placed apart and the fringes are observed away. If it produces the second dark fringe at a distance of from the central fringe, the wavelength of monochromatic light used would be

Answer: (D)

Solution

The second dark fringe is at , so

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Question ID VK-077321