The graph shows how a quantity $P$ varies with a quantity $Q$ for a sound wave travelling in air. What could $P$ and $Q$ represent?
- AP: amplitude, Q: intensity
- BP: frequency, Q: wavelength
- CP: speed, Q: frequency
- DP: wavelength, Q: period
Physics 9702 · AS & A Level · Transverse and longitudinal waves
The graph shows how a quantity $P$ varies with a quantity $Q$ for a sound wave travelling in air. What could $P$ and $Q$ represent?