Ultrasonic waves are those sound waves having frequency _... — Answer & Explanation | PrepBeePakistan

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MEDIUMENGLISHGeneral Knowledge

Ultrasonic waves are those sound waves having frequency __________?

Correct answer: D

Explanation

Ultrasonic waves have frequencies higher than 20 kilohertz (20,000 Hz). This range is above the upper limit of human hearing.

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