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Write true of false for the following statements: 

Sound produced by a sounding body of frequency 300 Hz covers 34 m in the time the sounding body produces 30 vibrations.

1 Answer

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Best answer

True 

Explanation: 

Given, 

Frequency(f) = 300 Hz 

No. of vibration = 30 

Distance travelled by sound = 34 m

frequency(f) = \(\frac{1}{Time\,period(T)}\)

⇒ T = \(\frac{1}{f}\)

⇒ T = \(\frac{1}{300}\) = 0.0033 sec

After 30 vibrations, 

Total time taken = No. of vib.×Time period

Total time taken = 30 × \(\frac{1}{300}\)  = 0.1 s

Distance travelled = speed × time 

Distance = 340×0.1 = 34 m

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