Longitudinal waves of frequency more than the audible range of humans is called

Longitudinal waves of frequency more than the audible range of humans are called Ultrasonic waves.

Here's the step by step explanation:

1. Sound waves are a type of longitudinal wave, where the particles of the medium vibrate in the same direction as the wave itself.

2. The human range of hearing is typically considered to be from 20 Hz to 20,000 Hz (20 kHz).

3. Any sound wave with frequencies above this range (20 kHz) is considered ultrasonic.

4. Ultrasonic waves are used in various fields such as medicine (for ultrasound imaging), industry (for cleaning delicate parts), and even in everyday appliances (like pest repellents).

So, longitudinal waves of frequency more than the audible range of humans are called Ultrasonic waves.