A person standing around the corner of a tall concrete building can hear the sound of a car horn before they can see the car. This is because the sound waves curve around the edge of the building and reach the person's ears.
What is the name of this wave effect?
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.