Angular width of 1st maxima
2θ=a2λ
Linear width of 1st maxima =(D)(2θ)=a2λD=1×10−32×(600×10−9)(2)=2.4mm
A beam of light of λ =600 nm from a distant source falls on a single slit 1 mm wide and the resulting diffraction pattern is observed on a screen 2 m…
NEET UG 2014 — Physics Optics
2014mcqeasy
A beam of light of λ=600nm from a distant source falls on a single slit 1mm wide and the resulting diffraction pattern is observed on a screen 2m away. The distance between first dark fringes on either side of the central bright fringe is:
Official previous-year question
Held on 30 Apr 2014 · Verified 9 Jul 2026.
Options
- A
1.2cm
- B
1.2mm
- C
2.4cm
- D
2.4mm
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