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Question: Answered & Verified by Expert
A parallel beam of monochromatic light falls normally on single narrow slit. The angular width of the central maximum in the resulting diffraction pattern
PhysicsWave OpticsMHT CETMHT CET 2022 (10 Aug Shift 2)
Options:
  • A decrease with decrease of slit width
  • B decreases with increase of slit width
  • C increases with increase of slit width
  • D may increase or decrease
Solution:
1942 Upvotes Verified Answer
The correct answer is: decreases with increase of slit width
Width of central maximum, $\beta=\frac{2 \lambda D}{d} \propto \frac{1}{d}$, where $d$ is width of the slit. "The angular width of central maximum decreases with increase of slit width."

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