Question

please answer this question

Answer 1

Sounds which are above 20 kHz cannot be heard by the human ear because it exceeds the normal range of a human ear which is 20 Hz to 20 kHz.

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Answer 2

Certain sound are not audible to us even if they are loud as human ear cannot hear a sound more than 20 kilohertz (ultrasound) or less tha 20 hertz (infrasonic waves)

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