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Question

Match the following range of frequencies with their sounds.

A
Infrasound
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B
Audible sound
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C
Ultrasound
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Solution

The correct option is
The audible range of frequency for an average human ear is 20 Hz20000 Hz.
The sound waves of frequencies above 20000 Hz are called ultrasound and below 20 Hz are called as infrasound, these ranges are inaudible to the human ear.

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