Question

what is Ultrasonic ,? plz tell ​

Answer 1

Answer:

Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing. Ultrasound is not different from "normal" sound in its physical properties, except that humans cannot hear it. This limit varies from person to person and is approximately 20 kilohertz in healthy young adults.

Answer 2

Answer:

Ultrasonic definition is - having a frequency above the human ear's audibility limit of about 20000 hertz —used of waves and vibrations.

Explanation:

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