A student uses a photograph to measure the wavelength of straight ripples. Which measurement should the student make?
Perpendicular to the wavefronts, across several crest spacings
Parallel to the wavefronts, from equilibrium to a crest
Perpendicular to the wavefronts, from equilibrium to a crest
Parallel to the wavefronts, across several crest spacings
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.