Water waves are diffracted as they pass through a gap in a barrier.
What change can be made to decrease the spreading of the waves due to diffraction?
Increase the frequency of the waves while keeping the speed constant.
Decrease the frequency of the waves while keeping the speed constant.
Increase the speed of the waves while keeping the frequency constant.
Decrease the width of the gap.
237 exam-style questions on CIE IGCSE Physics General properties of waves, covering General properties of waves. Each one has a worked solution and a mark scheme showing where the marks go.