A technician makes a full-size drawing of a high-pitched sound wave travelling through air at one instant. The drawing shows six compressions in a row, with a rarefaction between each neighbouring pair. Which method gives the wavelength of the sound?
Measure from the centre of the first compression to the centre of the sixth, then divide by 5.
Measure from the centre of one compression to the centre of the neighbouring rarefaction.
Measure from the centre of the first compression to the centre of the sixth, then divide by 6.
Measure the width of one compression along the direction in which the sound travels.
112 exam-style questions on Edexcel GCSE Physics 4.1 Wave properties, covering 4.1.1 Waves transfer energy and information, 4.1.2 Frequency, wavelength, amplitude, period and wavefronts, 4.1.3 Longitudinal and transverse waves, 4.1.4 The wave speed equations, 4.1.5 Measuring wave velocity, and 4.1.6 Calculating depth or distance from waves. Each one has a worked solution and a mark scheme showing where the marks go.