Question

Audible range of human is 20 hz to 20 khz . Express this range in term of time period

Answer 1

time period = 1/frequency

so ,
time period for 20Hz = 1/20 = 0.05 sec

time period for 20kHz = 1/20× 10^3 = 5 x 10^-5 sec

hence, audible range in time period

5 x 10^-5 to 5 x 10^-2 sec

Answer 2

we know that time period (T) is indirectly proportional to frequency (ν).
               
                                  T  =$\frac{1}{ν}$
 
for 20 Hz  (let's take time period  as $T_{1}$)
                         
                                 $T_{1}$ =  $\frac{1}{20}$
                                                         
                                       $T_{1}$    =  0.05 s 


for 20000 Hz (let's take time period as $T_{2}$)
            
                             $T_{2}$  =   $\frac{1}{20000}$
                                                                     
                                     $T_{2}$   =    0 . 00005 s

         The time period of the audible range is from 0.05 s to 0.00005 s