A) 300 m/s
B) 660 m/s
C) 115 m/s
D) 990 m/s
Correct Answer: B
Solution :
Sonometer is an apparatus for determining vibrations of a stretched string. When Us length of wire then, frequency of vibration of wire is \[n=\frac{v}{\lambda }=\frac{v}{2l}\] \[\Rightarrow \] \[v=n\times 2l\] Given, \[l=100\text{ }cm=1\text{ }m,\text{ }n=330\text{ }Hz\] \[\therefore \] \[v=330\times 2=660\text{ }m/s\]You need to login to perform this action.
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