Sound of maximum intensity is heard successively at an interval of 0.2 second on sounding two tuning fork to gather. What is the difference of frequencies of two tuning forks? 

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1 Answers

The beat period is 0.2 second so that the beat frequency is fb = 1/0.2 = 5HZ. 

Therefore, the difference of frequencies of the two tuning forks is 5HZ. 

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