Which row is not correct for a sound wave propagating through air?
quantityusual unitAfrequencyHzBperiodsCwave speedvDwavelengthm \begin{array}{|c|c|c|} \hline & \text{quantity} & \text{usual unit} \\ \hline \text{A} & \text{frequency} & \text{Hz} \\ \hline \text{B} & \text{period} & \text{s} \\ \hline \text{C} & \text{wave speed} & v \\ \hline \text{D} & \text{wavelength} & \text{m} \\ \hline \end{array} ABCDquantityfrequencyperiodwave speedwavelengthusual unitHzsvmA
B
C
D
237 exam-style questions on CIE IGCSE Physics General properties of waves, covering General properties of waves. Each one has a worked solution and a mark scheme showing where the marks go.