Physics (AS & A Level) · May / June 2019 · Paper 13 · Question 27

In an experiment, water waves in a ripple tank are incident on a gap, as shown. [diagram of plane wavefronts approaching a gap with an arrow indicating direction] Some diffraction of the water waves is observed. Which change to the experiment would provide a better demonstration of diffraction?

1. AIncrease the amplitude of the waves.
2. BIncrease the frequency of the waves.
3. CIncrease the wavelength of the waves.
4. DIncrease the width of the gap.

As printed in the paper