Light of wavelength λ is incident on slit of width d. The resulting diffraction pattern is observed on a screen placed at distance D. The linear width of central maximum is equal to width of the slit, then D=……….

Options

(a) 2 λ²/d
(b) d²/2λ
(c) d/λ
(d) 2λ/d

Correct Answer:

d²/2λ

Explanation:

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