Question

the sound from a mosquito is produced when it vibrates its wings at an average rate of 500 vibrations per second what is the time period of the vibration ? each step

Answer 1

See each step will be like waving a wing down and waving it up again to the same place so if it waves 500 times then it must be waving up 250 times and waving down 250 times respectively and consecutively after each up there is a down so each step will either be a wave up or down thus it will be

1/250 that's 0.004 secs