Which of the following sounds are inaudible to humans?
A
10Hz
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B
50Hz
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C
10,000Hz
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D
30,000Hz
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Solution
The correct options are A 10Hz D 30,000Hz The standard range of audible frequencies for humans is 20Hz - 20,000Hz. Hence, sound of frequencies 10Hz and 30,000Hz will not be inaudible to us.