What is the difference between supersonic and ultrasonic? - Vidyadip

Question

What is the difference between supersonic and ultrasonic$?$

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Answer

The sounds having frequency more than $20,000$ hertz $(Hz)$ are called ultrasonic or ultrasound. The sounds having frequency less than $20\ Hz$ are called infrasonic or infrasound. Both of these sounds cannot be heard by human beings. The audible range for of hearing by human beings is $20\ Hz$ to $20000\ Hz.$ The speed of sound is same for all frequencies in a particular medium. So, speed of ultrasonic sound and infrasonic sound are same in a particular medium.

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