A sonometer wire of length l1 vibrates with a frequency 250 Hz. If th – McqOptions

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1.	A sonometer wire of length l1 vibrates with a frequency 250 Hz. If the length of wire is increased then 2 beats per second are heard. What is ratio of the lengths of the wire?
A.	124: 125
B.	250: 313
C.	5: 3
D.	41: 57
Answer» B. 250: 313

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