PHYSICS

 LONGITUDINAL WAVES The waves in which the particles of a medium vibrate in the  direction of propagation of wave are called a longitudinal wave. These waves propagate in the form of compressions and rarefactions. Example: Sound waves in air. TRANSVERSE WAVES The waves in which the particles particles of a medium vibrate in the direction perpendicular to the direction of propagation of waves are called transverse waves. These waves propagate in the form of Crests and troughs  Example: water ripples