Physics, asked by jaiswalsk53gmailcom, 2 months ago

Write in details about followings
in minimum 100 words.
Laser
Ultrasound
SONAR​

Answers

Answered by kasheefshaikh65
0

Answer:

Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing. Ultrasound is not different from "normal" (audible) sound in its physical properties, except that humans cannot hear it. This limit varies from person to person and is approximately 20 kilohertz (20,000 hertz) in healthy young adults. Ultrasound devices operate with frequencies from 20 kHz up to several gigahertz.

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