Question

what is a a longitudinal wave? ​

Answer 1

              LONGITUDINAL WAVES

It basically means that a wave in which the particle movement is parallel to the direction of the propagation of the wave.

Explanation:

• It means that waves in which particles are moving left to right  which in turn makes other particles start to oscillate.
• These waves are also called as Pressure waves.
• Examples : most common example of these type of waves is Sound wave.

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Answer 2

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.