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CBSE Class 8 Science Question 6 of 13

Sound — Question 6

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Question 6

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?

Answer

Given,

Total number of vibrations = 500

Total time taken = 1 s

We know,

Time period = 1Frequency\dfrac{1}{\text{Frequency}} and

Frequency = Total number of oscillationsTotal time taken\dfrac{\text{Total number of oscillations}}{\text{Total time taken}}

Hence,

Time period = Total time takenTotal number of oscillations \dfrac{\text{Total time taken}}{\text{Total number of oscillations }}

Substituting we get,

Time period = 1500\dfrac{1}{500} = 0.002 s

So, time period = 0.002 s.