Question

In a longitudinal wave, particles vibrate ______ the direction of the propagation of the wave.

• A. along
• B. perpendicular to
• C. independent of
• D. oblique to

Answer 1

The correct option is A along

• Longitudinal waves are characterised by the motion of particles of the medium in the direction of wave propagation.
• Particles make to and fro motion in the direction of wave propagation and transfer energy to the neighbouring particles.