Question

Ultrasounds consists of sound a frequencies

Answer 1

Ultra sonic sound range from 20000 Hertz and more
Sonic sound range from 20 to 20000 Hertz
Infrasonic sound range less than 20 Hertz

Answer 2

The sound waves of frequency 20,000 Hertz and above are known as ultrasonic sound. These sound waves cannot be detected by our ears.