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MHT CET Physics question

PhysicsWave OpticsMHT CET

In a double slit experiment with monochromatic light, fringes are obtained on a screen placed at some distance from the slits. If the screen is moved by m towards the slits, the change in fringe width is m. If separation between the slits is m, the wavelength of light used is

Answer: (D)

Solution

gives m

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Question ID VK-077331