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Question
In a single slit diffraction experiment, how does the angular width of the central maxima change when:
- screen is moved away from the plane of the slit?
- width of the slit is increased?
- light of larger wavelength is used?
Solution
The angular width of central maximum ∝ `lambda/"e"`:
- Angular width remains unchanged when the screen is moved away from the plane of the slit.
- The angular width decreases when the width of slit (e) is increased.
- The angular width will increase if light of larger wavelength (λ) is used.
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