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A tuning fork produces 4 beats//sec, wit...

A tuning fork produces `4 beats//sec`, with a sonometer wire of length 40 cm. It is found that when the length is increased to 44 cm, by keeping other factors constant, again `4 beat//sec` are produced. What isthe frequency of the tuning fork?

A

44Hz

B

100Hz

C

84Hz

D

176Hz

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