Science, asked by supriya8620, 12 days ago

What is ultrasonic sound? science class 7th ssc board plz its urgent​

Answers

Answered by chamundeschamundes4
1

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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Answered by BRAINLIESTY
1

Answer:

Sound which is above 20 KHz

Explanation:

We humans only have a hearing range of 20 Hz to 20,000 Hz (20KHz). Sounds which are lower than 20 Hz are called  infrasonic or subsonic sound while those above 20 KHz is called ultrasonic sound

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