Question

what is mean by frequency of oscillation which sound are audible and which one are in inaudible to human ear

Answer 1

the sound which air present that audible to human and the sound which air is not present that sound doesn't audible to human the frequency of oscillation is measure in Hz the we can hear by vibrations of an particular object and the air molecules are closed to each other is called compression and the air molecules are far away from each other is called rarefaction please brainlist