MHT CET · Physics · Wave Optics
A parallel beam of monochromatic light falls normally on single narrow slit. The angular width of the central maximum in the resulting diffraction pattern
- 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
Answer & Solution
Correct Answer
(B) decreases with increase of slit width
Step-by-step Solution
Detailed explanation
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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