Question

sound of frequency higher than 20 kHz is called ?​

Answer 1

Answer:

sound of frequency higher than 20 kHz is called Ultrasonic sound..

Explanation:

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Answer 2

Answer:

They are inaudible sounds. As they have a very high frequency, the human ear cannot hear them. The human ear can catch sounds only between 20Hz-20KHz. These are called ultrasonic sounds.

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