Velocity of sound

The rate at which a sound wave travels through a medium. Velocity is equal to the square root of the bulk modulus divided by density.

OR

The distance covered by a point on the wave( for example the point of highest density or lowest density) in the unit time is the velocity of the sound wave.

Velocity= Distance/ Time

Any point on the sound wave covers a distance equal to wavelength (λ) in the time period (T). Thus the velocity of sound is given by

Velocity= wavelength/ Time period

V=λ /T

In any medium at fixed physical conditions, the velocity of sound of different frequencies is very nearly the same. The velocity is highest in solids and least in gases. It increases with an increase in the temperature of the medium.

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