If the velocity of sound in air is 330 m/s, then express the audible range of frequencies in terms of time period.

*{ 1 }$ = 20 Hz,
${ V }*{ 2 }$ = 20000 Hz and the velocity, v = 330 m/s

So, Time period will become ${ T }

*{ 1 }$ = 1/ V1 = 1/20 = 5 x ${{10}^{-2}}$ s*

and the time period will become ${ T }{ 2 }$ = 1/20000 = 5 x ${{10}^{-5}}$ s

and the time period will become ${ T }

Thus, the audible range in terms of time period is from 5 X ${{10}^{-2}}$ s to 5 X ${{10}^{-5}}$ s.