A student standing behind a tall, solid brick wall can hear a friend shouting on the other side of the wall, but cannot see them. Which statement best explains this phenomenon?
Sound waves are longitudinal and light waves are transverse.
Sound waves have a wavelength comparable to the size of the wall, allowing them to diffract, while light waves have a much shorter wavelength.
Sound waves travel much faster than light waves in air.
Sound waves have a much shorter wavelength than light waves, which allows them to bend around obstacles.
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.