A student records three measurements of the time for 20 complete oscillations of a dipper: 9.8 s, 10.0 s and 10.2 s. What is the frequency calculated using the mean time?
0.10 Hz0.10\ \mathrm{Hz}0.10 Hz
0.50 Hz0.50\ \mathrm{Hz}0.50 Hz
2.0 Hz2.0\ \mathrm{Hz}2.0 Hz
6.0 Hz6.0\ \mathrm{Hz}6.0 Hz
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.