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In the Young's double slit experiment using a monochromatic light of wavelength λ , the path difference (in terms of an integer n) corresponding to any point having half the peak intensity is

(2n + 1) 2 λ
(2n + 1) 4 λ
(2n + 1) 8 λ
(2n + 1) 16 λ

Correct answer: (2n + 1) 4 λ

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