Question

Explain ultrasonic with definition...

Answer 1

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$\large\pink\dashrightarrow$ 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

Answer 2

Answer:

Ultrasonic waves are sound waves whose frequencies are higher than those of waves normally audible to the human ear. The angular frequencies of the ultrasonic waves produced in laboratories lie from about 105 sec−1 to about 3 × 109 sec−1, the former value representing the limit of audibility of the human ear.