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Infra, Ultra and Audible Sound

Sound with fr...

Question

Sound with frequencies in the range of $20 H z$ to $20 k H z$ are called.

A

audible sound

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B

inaudible sound

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C

ultrasonic sound

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Solution

The correct option is A audible sound
The humans can easily detect the frequencies ranging between $20 H z$ to $20 k H z$ . Hence the sounds with in this range are known as audible sound. Sounds with frequencies below $20 H z$ are called as infrasonic and the sound with frequencies above $20 k H z$ are called as ultrasonic sound.

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