Physics (AS & A Level) · Oct / Nov 2024 · Paper 13 · Question 30
9702Diffraction
A vibrating bar produces surface water waves in a ripple tank. The wavelength of the waves is 5.0 cm and they pass through a gap of width 20 cm. Which change will increase the amount of diffraction that is observed?
- Adecreasing the distance between the bar and the gap
- Bdecreasing the frequency of the wave
- Cincreasing the amplitude of the wave
- Dincreasing the width of the gap
As printed in the paper
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Correct answer: B. decreasing the frequency of the wave
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