Out of the following, which frequencies are not clearly audible to the human ear?

30 Hz

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30,000 Hz

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300 Hz

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3000 Hz

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Solution

The correct option is B
30,000 Hz

30,000 Hz
The range of audible frequencies that a human being can hear is known as the range of hearing. A normal human being can hear from the frequency range of 20 Hz to 20 kHz.
Our human ear is most sensitive around the frequency of 2000 Hz to 3000 Hz
Hence, the frequency not clearly audible to the human ear is 30,000 Hz.
Hence, option (b) is correct.

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