A Level Physics Practice Exam

The amplitude of a wave between nodes varies due to the nature of standing waves. In a standing wave, nodes are points of zero displacement where destructive interference occurs, while between these nodes are antinodes, where the wave reaches its maximum amplitude. As you move away from the nodes towards the antinodes, the amplitude increases, reaching a maximum at the antinode. This pattern of alternating maxima and minima results in a varying amplitude throughout the segment between any two nodes, confirming that the correct understanding is that the amplitude indeed varies.