Q.

Sound is a [[1]] wave.


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Detailed Solution

Sound is a longitudinal wave.
Longitudinal waves mean that the direction of propagation of the wave is parallel to the direction of the energy wave. Sound waves occur due to the vibration of particles of the medium, and hence particles move back and forth. Due to back-and-forth movement, they are longitudinal in nature. Also, in longitudinal waves, compression and rarefactions are produced.
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