Physics (AS & A Level) · Oct / Nov 2024 · Paper 12 · Question 29
9702Diffraction
An electromagnetic wave is diffracted as it passes through a single slit. The width of the slit is larger than the wavelength of the wave. Which change will decrease the amount of diffraction of the wave?
- ADecrease the frequency of the wave.
- BDecrease the time period of the wave.
- CDecrease the width of the slit.
- DIncrease the wavelength of the wave.
As printed in the paper
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Correct answer: B. Decrease the time period of the wave.
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