Question

What do you understand about ultrasonic sound?

Answer 1

Explanation:

Ultrasonic sound are the sounds whose frequency is more than 20Khz.

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Answer 2

Answer:

Ultrasound is acoustic (sound) energy in the form of waves having a frequency above the human hearing range. The highest frequency that the human ear can detect is approximately 20 thousand cycles per second (20,000 Hz). ...

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