MHT CET 2022 Physics question
A light wave of wavelength '' 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
Answer: (D)
Solution
For a single slit the linear width of the central (principal) maximum on a screen at distance is (first minimum at ). Setting it equal to the slit width :
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