if a mosquito's wings oscillate 15 times in a second, will this sound be heard to us ?
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The sound produced by a mosquito can not be heard.
Explanation:
- As the mosquito vibrates its wings at an average rate of 15 times in a second therefore its frequency will be 15 Hz.
- Now its time period will be T = 1 /f = 1/ 15 = 0.06
- A human can hear the sound if its frequency lies between 20 Hz to 20 kHz.
- Thus the sound produced by a mosquito can not be heard as it does not lie in human hearing frequency range.
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