Questions
The fundamental frequency of a sonometer wire of length l is f0. A bridge is now introduced at a distance from the centre of the wire . The number of beats heard if both sides of the bridge are set into vibration in their fundamental modes are :
detailed solution
Correct option is A
We know fundamental frequency fo=v2l⇒v=2lfo Beat frequency, f1−f2=v2l2−Δl−v2l2+Δl⇒ f1−f2=2fol4Δll2−4Δl2≈8foΔllTalk to our academic expert!
Similar Questions
A wire having a linear density of 5 g/m is stretched between two rigid supports with a tension of 450 N. It is observed that the wire resonates at a frequency of 420 Hz. The next highest frequency at which the same wire resonates is 490 Hz. Find the length of the wire. (in m)
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