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Q.

The sound from a mosquito is produced when it vibrates its wings at the average rate of $500 vibrations per second$ . The time period of the vibration is ____ $s$ .

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Detailed Solution

The sound from a mosquito is produced when it vibrates its wings at the average rate of

500 vibrations per second

. The time period of the vibration is

0.002 s

.
Given,
Number of vibrations per second =

500

We know that frequency of vibration is the number of oscillations per second. Its unit is Hertz (Hz). Time period of a sound wave is the time taken to complete one oscillation. Time period is the reciprocal of frequency.
So, number of vibrations per second = frequency

\Rightarrow f = 500 Hz

So, time period,

T = \frac{1}{f}

\Rightarrow T = \frac{1}{500}

\Rightarrow T = 0.002 s

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