Question

the sound from a mosquito is produced when it moves its wings at an average rate of 400 vibrations per second. what is the time period of the vibrations?

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Answer 1

Frequency = 400 vibrations/second.

 Time Period = (Time Taken)/ (Number of Oscillations)

= (1/400) = 0.0025 sec.

Answer 2

Frequency =400 vibrations /seconds
Time period =(Time taken /No. of oscillation)
=(1/400)=0.0025second