NEET2015Physics-Wave Optics
NEET 2015 Physics Diffraction MCQ Question
Type: MCQ-conceptual-Medium-Class 12
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 light. If 'D' is the distance of the screen from the slit, the width of the central maxima will be
A
2Dλ/a
B
Dλ/2a
C
Da/λ
D
2Da/λ
Correct Answer
Option D
Detailed Explanation
The width of the central maximum in single-slit diffraction is given by the formula 2λD/a.
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