A vibration generator causes a point on a metal rod to oscillate. A student uses a video recording to measure the time for the point to complete 16 oscillations. The measurement is repeated three times.
| Measurement | Time for 16 oscillations (s\mathrm{s}s) |
|---|---|
| 1 | 6.3 |
| 2 | 6.4 |
| 3 | 6.5 |
Which calculation gives the frequency of the oscillations?
6.3+6.4+6.516×3 Hz\dfrac{6.3+6.4+6.5}{16\times3}\ \mathrm{Hz}16×36.3+6.4+6.5 Hz
16×3(6.3+6.4+6.5)/3 Hz\dfrac{16\times3}{(6.3+6.4+6.5)/3}\ \mathrm{Hz}(6.3+6.4+6.5)/316×3 Hz
166.3+6.4+6.5 Hz\dfrac{16}{6.3+6.4+6.5}\ \mathrm{Hz}6.3+6.4+6.516 Hz
16×36.3+6.4+6.5 Hz\dfrac{16\times3}{6.3+6.4+6.5}\ \mathrm{Hz}6.3+6.4+6.516×3 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.