Question

A given sound is inaudible to the human ear. We can then say that this is so -
*only because its amplitude is too small.
*only because its frequency is below 20 Hz.
*only because its frequency is above 20 kHz.
*because it has any one, or more, of the three characteristics listed above. ​

Answer 1

Answer:

ii) only because it's frequency is below 20 Hz

Answer 2

Answer:

ANS:- only because it's frequency is below 20 Hz