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(i) What is the audible range for human ...

(i) What is the audible range for human beings ?
(ii) What is the harmful effect of loud music on our hearing system ?

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(i) Man can hear frequencies as low as 20 cycles per second to as high as `20,000` hertz per second.
(ii) Excessive loudness may destroy the sensory cells present in the ears and may lead to deafness.
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