The table shows the speed of sound in two liquids.
| Liquid | Speed in m/s\mathrm{m/s}m/s |
|---|---|
| P | 1200 |
| Q | 1800 |
A sound wave has a wavelength of 0.60 m in P and passes into Q. By how much does its wavelength increase?
0.20 m0.20\ \mathrm{m}0.20 m
0.30 m0.30\ \mathrm{m}0.30 m
0.90 m0.90\ \mathrm{m}0.90 m
1.50 m1.50\ \mathrm{m}1.50 m
112 exam-style questions on Edexcel GCSE Physics 4.3 Sound, ultrasound and infrasound, covering 4.3.1 Sound waves, vibrations and the human ear, 4.3.2 Ultrasound and infrasound, 4.3.3 Uses of ultrasound and infrasound, and 4.3.4 Sound waves passing between media. Each one has a worked solution and a mark scheme showing where the marks go.