Physics (AS & A Level) · May / June 2023 · Paper 11 · Question 27

A ripple tank and a barrier with a single gap are used to demonstrate the diffraction of surface ripples on water. Initially, the wavelength of the ripples is five times smaller than the gap in the barrier. Which change increases the amount of diffraction observed?

1. Adouble the amplitude of the ripples
2. Bdouble the width of the gap
3. Chalve the frequency of the ripples
4. Dhalve the wavelength of the ripples

As printed in the paper