Question

what are longitudinal waves​

Answer 1

Answer:

Longitudinal wave, wave consisting of a periodic disturbance or vibration that takes place in the same direction as the advance of the wave. ... Sound moving through air also compresses and rarefies the gas in the direction of travel of the sound wave as they vibrate back and forth.

Answer 2

a wave that vibrates in the direction that it is moving

देशांतरीय लहर (वह लहर जो अपनी गति की दिशा में कंपन करती है)