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Wave and Particle Motion of Waves

What are cres...

Question

What are crests and troughs in a sound wave? Show the crests and troughs in a diagram of sound of wave.

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Solution

Crests are the topmost peaks of the graph of wave. In sound waves, they represent the region of compressions.
Troughs are the bottom most peaks of the graph of wave. In sound waves, they represent the region of rarefactions.

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