A student sitting in a classroom can hear a teacher talking in the hallway, even though the teacher is not in her direct line of sight.
Which wave property explains why the sound waves are able to bend around the doorway to reach the student?
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.