A) 600 Hz
B) 300 Hz
C) 200 Hz
D) 150 Hz
Correct Answer: B
Solution :
Initial frequency of vibration \[v\propto \sqrt{T}\] When the tension in one of the instruments is increased by 1%, then \[v\propto \sqrt{1+\frac{1}{100}}\] \[\therefore\] \[\frac{v'}{v}={{\left( 1+\frac{1}{100} \right)}^{1/2}}=1+\frac{1}{200}\] Or \[\frac{v'-v}{v}=\frac{1}{200}\] Or \[\frac{3}{2v}=\frac{1}{200}\] or \[v=300\text{ }Hz\]You need to login to perform this action.
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