A student standing in a hallway can hear music playing from a speaker inside a classroom, even though they are around a corner and cannot see the speaker. This is because the sound waves bend and spread out as they pass through the open doorway.
What is the name for 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.