A sound wave produced by a source in water has a frequency of 750 Hz. It travels through water and then enters a steel plate.
| Material | Speed of sound in m/s\text{m/s}m/s |
|---|---|
| water | 1500 |
| steel | 5000 |
Calculate the wavelength of the sound wave in water.
Calculate the wavelength of the sound wave in the steel plate.
A student says that the sound has a higher pitch after entering the steel plate. Explain whether the student is correct.
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.