Two identical sonometer wires have a fundamental frequency of 500 Hz when kept under the same tension. What fractional increase in the tension of one wire would cause an occurrence of 5 beats per sec, when both wires vibrate together?

Explanation

Since `f prop sqrt(T)`
`:.(Deltaf)/(f)=(1)/(2)(DeltaT)/(T) So (DeltaT)/(T)=2xx(5)/(500)=0.02`