Question

Audible frequency range of a human ear is 20Hz to 20000Hz.Express it in terms of time period.

Answer 1

In terms of time period it will be:-
1. 20 Hz = 1/20 s or 0.05 s
2. 20000 Hz = 1/20000 s or 0.00005 s

Answer 2

20 Hz

= 1/20 s

= 0.05 s

20000 Hz

= 1/20000 s

= 0.00005 s

20 Hz to 20 KHz

Audible sound is defined as the sound which can be hear by a particular organism .

This means that the sound wave must have a frequency of 20 Hz to 20,000 Hz for humans.

This is the audibility range of humans.

However some other animals like dolphins , bats , etc. have more audiblity ranges and hence they can hear wide variety of sounds.