Why children under 5 year can hear wave with frequency 25 khz
Nobita678:
This is 'cos children's ears are evolved to do so.
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Humans cant hear frequency of 25Khz neither the children..because humans can only hear frequency within the range of 20Hz-20KHz,Above 20KHz the sound is characterised as Ultrasound.
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human can hear the frequency of 20khz and the about 20khz it is characterise as ultrasound
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