The speed of sound in water is about 4.4 times the speed of sound in air.
A sound wave passes from air into water.
Which statement is correct?
The frequency increases by 4.4 times and the wavelength stays the same
The wavelength decreases by 4.4 times and the frequency stays the same
The frequency and the wavelength both increase by 2.2 times
The wavelength increases by 4.4 times and the frequency stays the same
52 exam-style questions on OCR GCSE Physics 5.1 Wave behaviour, covering 5.1.1 Describing wave motion, 5.1.2 Wavelength and frequency, 5.1.3 Wave speed, frequency and wavelength, 5.1.4 Wave speed problems, 5.1.5 Transverse and longitudinal waves, 5.1.6 Sound waves crossing between media, 5.1.7 Reflection, transmission and absorption at interfaces, 5.1.8 Sound waves and vibrations in solids, 5.1.9 Frequency range and human hearing, 5.1.10 Modelling waves with water ripples and sound, and 5.1.11 Evidence that the wave travels, not the medium. Each one has a worked solution and a mark scheme showing where the marks go.