A) 4 kg-wt
B) 8 kg-wt
C) 12 kg-wt
D) 16 kg-wt
Correct Answer: D
Solution :
Frequency of stretched string is \[n=\frac{1}{\lambda }\sqrt{\frac{T}{\mu }}\]where\[\lambda \]is wavelength, T the tension and\[\mu \]the mass per unit length. For octave \[n=2n\] \[\therefore \] \[\frac{n}{n}=\sqrt{\frac{T}{T}}=2\] \[\Rightarrow \] \[T=4T\] Given, \[T=4\text{ }kg-wt\] \[T=16kg-wt\]You need to login to perform this action.
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