An observer standing behind a tall brick wall can still hear the sound of a car horn from the other side, even though they cannot see the car. Which wave property best explains why the sound waves bend around the edges of the wall?
diffraction
dispersion
reflection
refraction
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.