The identical piano wires kept under the same tension T have a fundamental frequency of 600 Hz. The fractional increase in the tension of one of the wires which will lead to occurrence of 6 beats//s when both the wires oscillate together would be

Options

A. 0.01
B. 0.02
C. 0.03
D. 0.04

Answer

B

Explanation

As `upsilon=(1)/(2L)sqrt((T)/(mu)) therefore (Deltaupsilon)/(upsilon)=(1)/(2)(DeltaT)/(T)`
`(DeltaT)/(T)=2(Deltaupsilon)/(upsilon)=2xx(6)/(600)=0.02`