A loudspeaker cone must vibrate with a period of 0.050 s and an amplitude of 1.5 mm.
A sensor measures the frequency of the cone and the total distance between its furthest forward and furthest backward positions. The table shows the sensor records for four different settings of the signal generator that drives the cone.
| sensor record | frequency in Hz\mathrm{Hz}Hz | total distance in mm\mathrm{mm}mm |
|---|---|---|
| P | 10 | 3.0 |
| Q | 20 | 3.0 |
| R | 20 | 0.75 |
| S | 40 | 0.75 |
Which sensor record shows the required motion?
record R
record S
record P
record Q
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.