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04 August 2024 JobAssam Share

What is the frequency range of ultrasonic waves?

A. between 20 hertz and 1000 hertz
B. between 1000 hertz and 20000 hertz
C. more than 20 kilohertz
D. less than 20 hertz

more than 20 kilohertz

Please select one of the options to reveal the correct answer.

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