Question

what is longitudinal wave ?​

Answer 1

Answer:

Longitudinal waves are waves in which the displacement of the medium is in the same direction as, or the opposite direction to, the direction of propagation of the wave. In longitudinal waves, the displacement of the medium is parallel to the propagation of the wave.

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Answer 2

Answer:

a wave (such as a sound wave) in which the particles of the medium vibrate in the direction of the line of advance of the wave.

Longitudinal waves are waves in which the displacement of the medium is in the same direction as, or the opposite direction to, the direction of propagation of the wave

Explanation:

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