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Question

Which of the following frequencies is inaudible to human beings?

A
40 kHz
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B
50 Hz
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C
15 kHz
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D
1 kHz
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Solution

The correct option is A 40 kHz
  • The audible range of a human ear is 20 Hz to 20 kHz.
  • Frequencies below 20 Hz and above 20 kHz are inaudible to human beings.
Hence, 40 kHz frequency will be inaudible to human ears.

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