Question

2)
1. What do you mean by ultrasonic sound?​

Answer 1

Answer:

the sound that is beyond our hearing capicity

Explanation:

Answer 2

Answer:

Ultrasonics, vibrations of frequencies greater than the upper limit of the audible range for humans—that is, greater than about 20 kilohertz. The term sonic is applied to ultrasound waves of very high amplitudes.

Explanation:

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