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Propagation of Sound

One complete ...

Question

One complete crest or one complete trough makes one complete wave.

A

True

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B

False

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Solution

The correct option is B
False

A complete waveform consists of a crest and a trough. In physical form, a complete waveform comprises of a compression and a rarefaction. So, only compression or only rarefaction will form half of the wave. Similarly, one crest or one trough forms a half wave. Thus, the given statement is false.

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