A) \[25\,f\]
B) \[5\,f\]
C) \[10\,f\]
D) \[f\]
Correct Answer: B
Solution :
The fundamental frequency \[f=\frac{1}{2L}\sqrt{\frac{T}{m}}\] \[\therefore \] \[\frac{f'}{f}=\sqrt{\frac{T'}{T}}=\sqrt{\frac{25T}{T}}=5\] or \[f'=5f\]
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