Physics (AS & A Level) · Feb / March 2021 · Paper 12 · Question 27

A water wave is diffracted as it passes through a gap between two barriers in a ripple tank. The wave is observed to 'spread out' as it moves through the gap. Which two factors both affect the amount of diffraction observed?

1. Athe amplitude and frequency of the incident wave
2. Bthe amplitude of the incident wave and the width of the gap
3. Cthe wavelength and amplitude of the incident wave
4. Dthe wavelength of the incident wave and the width of the gap

As printed in the paper