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Infrasonic, Ultrasonic and Audio waves

Which of the ...

Question

Which of the following frequency is not clearly audible to the human ear?

A

30 Hz

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B

30,000 Hz

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C

300 Hz

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D

3000 Hz

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Solution

The correct option is A 30,000 Hz
The frequency range of a audible sound for human ear is 20 to 20000Hz. So among the options 30000 will be the right answer.

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