A) 6
B) 3
C) 3/p
D) 3p
Correct Answer: C
Solution :
\[{{n}_{1}}=\frac{316}{2\pi }\] and \[{{f}_{2}}=\frac{310}{2\pi }\] Number of beats heard per second = n1 ? n2 =\[\frac{316}{2\pi }-\frac{310}{2\pi }=\frac{3}{\pi }\]
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