For a parallel beam of monochromatic light of wavelength λ diffraction is produced by a single slit whose width a is of the order of the wavelength of the light. If D is the distance of the screen from the slit, the width of the central maxima will be

Options

(a) 2Dλ/a
(b) Dλ/a
(c) Da/λ
(d) 2Da/λ

Correct Answer:

2Dλ/a

Explanation:

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