Linear width of central maximum.
D(2θ)=2Dθ=a2Dλ
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…
NEET UG 2015 — Physics Optics
2015mcqeasy
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:
Official previous-year question
Held on 30 Apr 2015 · Verified 9 Jul 2026.
Options
- A
a2Dλ
- B
aDλ
- C
λDa
- D
λ2Da
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