A Level Physics Practice Exam

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Study for the A Level Physics Exam. Our quiz features flashcards and multiple choice questions, each with hints and explanations. Prepare thoroughly!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What happens to the amplitude of a wave between nodes?

It remains constant
It varies
It decreases gradually
It doubles continuously

The correct answer is: It varies

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.