(a)[2]
Using the vibrations of points on a wave together with the direction of energy transfer, distinguish between transverse waves and longitudinal waves.
(b)[2]
Describe what is meant by a polarised wave.
(c)
Fig. 5.1 shows the variation with distance $x$ of the displacement $y$ of a transverse wave.
(c(i)1)[1]
Use Fig. 5.1 to find the amplitude of the wave.
(c(i)2)[2]
Use Fig. 5.1 to determine the phase difference between points A and B.
(c(ii))[1]
Find the amplitude of a wave whose intensity is twice that shown in Fig. 5.1.
(ii)[1]
Find the amplitude of a wave whose intensity is twice that shown in Fig. 5.1.