(a(i)(1))[1]
Define wavelength $\lambda$ for a wave.
(a(i)(2))[1]
Define frequency $f$ for a wave.
(a(ii))[1]
Use your definitions to deduce how $\lambda$, $f$ and the speed $v$ of the wave are related.
(b(i))[1]
Plane waves on the surface of water are shown in Fig. 5.1 at a single instant. The waves have frequency $2.5\,\text{Hz}$. Determine the amplitude.
(b(ii))[2]
Determine how fast the waves travel.
(b(iii))[1]
Determine the phase difference separating points A and B.
(c)[2]
The wave in (b) was generated in a ripple tank. Describe briefly, using a sketch diagram, how the wave can be observed.