A) 37.5cm
B) 40cm
C) 50cm
D) 62.5cm
Correct Answer: B
Solution :
The frequency produced in a string of length l, mass per unit length m, and tension T is \[V=2-\left( \frac{2}{3.9+0.1} \right)\times 0.1\] Given \[V=1.95V\] and \[{{m}_{1}}{{u}_{1}}={{m}_{2}}{{v}_{2}}\] \[{{u}_{1}}=1m/s=0.05kg,{{v}_{2}}=30m/s\] \[\Rightarrow \] \[{{m}_{1}}\times 1=0.05\times 30\] \[\Rightarrow \]You need to login to perform this action.
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