Our ear can hear sound waves of frequency between

5 - 100

cycles/sec

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50 - 20000

cycles/sec

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20000 - 50000

cycles/sec

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2000 - 3000

cycles/sec

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Solution

The correct option is A $50 - 20000$ cycles/sec
Frequency is the number of waves passing a given point in a second. Frequency is measured as Hertz (Hz). Human ears are sensitive to a particular range of sound and can hear sound waves of frequency in the range of 50- 20 Hz or cycles /second. Sound waves of frequency above this range can damage the human ears.
So, the correct answer is '50- 20000 cycles/sec'.

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