A student watching waves in a ripple tank notices that 12 complete wave crests pass a fixed point in 15 seconds.
What is the frequency of these waves?
0.80 Hz0.80\text{ Hz}0.80 Hz
1.25 Hz1.25\text{ Hz}1.25 Hz
3.0 Hz3.0\text{ Hz}3.0 Hz
180 Hz180\text{ Hz}180 Hz
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.