Question

My first TUTORIAL on LONGITUDINAL SOUND WAVES-

Answer 1

\[\Huge{\color{blue}{\text{What is a longitudinal wave-- }}}\]

A wave in which the particles of the medium oscillate(vibrate) to and fro about their mean position in the direction of propagation of the wave is called a LONGITUDINAL WAVE..




Longitudinal waves can be produced in any medium .viz.in solids,liquids and in gases.

\[\Large{\color{red}{\text{Graphical representation of longitudinal wave --- }}}\]

Longitudinal wave is represented by density-distance graph.In figure , the horizontal line OX represents the normal density of air.All the points above this line represent greater density.In a compression of a longitudinal wave ,the density of the particles is the high.So, here A and C represent compressions.All the points below the line OX represent less density(than normal).In a rarefraction,the density of the particles is less than in the normal. So, here B and D represent rarefractions.