A 200 m race is started by firing a gun. The gun makes a bang and a puff of smoke at the same time. A finishing judge stands at the finish line, 200 m away. When does the finishing judge see the smoke and when does he hear the bang?
Sees the smoke almost immediately, hears the bang almost immediately.
Sees the smoke almost immediately, hears the bang after about 0.6 s.
Sees the smoke after about 0.6 s, hears the bang almost immediately.
Sees the smoke after about 0.6 s, hears the bang after about 0.6 s.
295 exam-style questions on CIE IGCSE Physics Sound, covering Sound. Each one has a worked solution and a mark scheme showing where the marks go.