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MHT CET Physics question

PhysicsWave OpticsMHT CET

The angular separation of the central maximum in the Fraunhofer diffraction pattern is measured. The slit is illuminated by the light of wavelength 6000Å. If the slit is illuminated by light of another wavelength, the angular separation decreases by 30%. The wavelength of light used is [MHT-CET 2021]

Answer: (D)

Solution

Angular width , so the new wavelength is

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Question ID VK-077503