why any person can not hear that sound whose frequency is more than 20000hrtz
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because it is out of range of human ear
krsumitanand:
yaa but why we cant hear more than 20000hrtz is our ear stop working in this range
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The frequency of 20hertz to 20000 Hertz can be heard by any person. Frequency higher or lower (infrasonic or ultrasonic) cannot be heard as it is beyond the sonic level.
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