A wave in which the particles of the medium vibrate back and forth in the same direction, parallel to the motion of the wave, is called _____?

A wave in which the particles of the medium vibrate back and forth in the same direction, parallel to the motion of the wave, is called _____?

ایک ایسی لہر جس میں درمیانے درجے کے ذرات اسی سمت میں آگے پیچھے کمپن ہوتے ہیں ، لہر کی حرکت کے متوازی ، کو _____ کہا جاتا ہے؟
Explanation

In a longitudinal wave, particles of the medium move parallel to the direction of wave propagation.

Sound waves in air are a common example of longitudinal waves.

Physics Tutorial: Categories of Waves