Physics · Optics
The angular width of the central maximum in the Fraunhofer diffraction pattern of a single slit is measured using light of wavelength 6000 Å. When the slit is illuminated by another wavelength, the angular width decreases by 30%. Assuming the angular width to be very small, what is this new wavelength?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 15400 Å
- 21800 Å
- 33600 Å
- 44200 Å✓
Correct answer
4200 Å
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