One compression and one rarefaction makes two waves.

Name the following One compression and one rarefaction

(A): A wind is different from the sound wave in air. (R): The wind involves motion of air from one place to the other. The sound wave involves compressions and rarefactions of layers of air.

In the figure given alongside, mark compressions and rarefactions of a wave as the tuning fork is vibrating. Also mark one complete wave.

What is the distance between a compression and its nearest rarefaction in a longitudinal wave?

Explain the meaning of terms compression and rarefaction in relation to a longitudnal wave.

(A): The longitudinal waves are called pressure waves. (R): Propagation of longitudinal waves through a medium involves changes in pressure and volume of medium, when compression and rarefaction are formed.

A sound wave propagates in a medium of Bulk modulus B by means of compressions and rare fractions. If P_( c) and P_(e ) are the pressures at compression and rarefaction respectively, .a. be the wave amplitude and k be the angular wave number then,

The number of compressions and rarefactions which pass an observer in 5 minutes, if the velocity of sound wave is 330 m/s and the wavelength of the wave is 30 cm, is

Assertion : The basic of Laplace correction was that, exchange of heat between the region of compression and rarefaction in air is not possible. Reason : Air is a bad conductor of heat and velocity of soundin air is large.

Draw a curve showing density or pressure variations with respect to distance for a disturbance produced by sound. Mark the position of compression and rarefaction on this curve. Also define wavelengths and time period using this curve.