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MHT CET Physics question

PhysicsWave OpticsMHT CET

A light wave of wavelength 'λ' is incident on a slit of width 'd'. The resulting diffraction pattern is observed on a screen at a distance 'D'. If linear width of the principal maximum is equal to the width of the slit, then the distance D is [MHTCET 2020]

Answer: (A)

Solution

Linear width of the principal maximum ; setting it equal to gives

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Question ID VK-077549