(a)[3]
Explain why the wavefronts change direction in the pattern shown in Fig. 6.1.
(b(i))[3]
Using the data in Fig. 6.1, determine the frequency of the wave.
(b(ii))[3]
Determine the wave speed in the right-hand side of the tank.
Physics 0625 · IGCSE · General properties of waves
General properties of waves — practice question
Seen from above, Fig. 6.1 depicts a shallow tank. The water has two different depths in the two sections of the tank. Fig. 6.1 also shows the crests and troughs of a wave travelling from left to right. In Fig. 6.1, which is not to scale, there is a boundary, crests shown by solid lines, troughs shown by dashed lines, a labelled distance of 2.6 cm, and angles of 33^{\circ} and 45^{\circ}.