A) 7.5 Hz
B) 50 Hz
C) 100 Hz
D) 125 Hz
Correct Answer: B
Solution :
Beat frequency of two successive tuning forks is 4 \[\therefore \] difference between the frequencies = 4 From formula of A.P. \[\begin{align} & I=a+(n-1)\,d \\ & 3f=f+(26-1)\times 4 \\ & 2f=100 \\ & f=50Hz \\ \end{align}\]You need to login to perform this action.
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