Question

what is infrasonic sound and ultrasonic sound ..... please help me Didi or bhaiya .... please​

Answer 1

Answer:

okk.....

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Answer 2

Answer:

Sound waves with frequencies less than 20Hz are called infrasonic or subsonic and those with frequencies above 20kHz are called ultrasonic. ... They do this by "speaking" and hearing with infrasonic waves which we cannot hear but can bend around obstacles rather than being absorbed like normal sound.

Explanation:

here is your answer ☺️.