A) \[\frac{n}{4}\]
B) \[\sqrt{2}n\]
C) \[n\]
D) \[\frac{n}{\sqrt{2}}\]
Correct Answer: C
Solution :
Frequency of sonometer wire, \[n=\frac{p}{2rl}\sqrt{\frac{T}{\pi \rho }}\] ??..(i) When tension and diameter are doubled and density is halved, then \[n'=\frac{p}{2\times 2rl}\sqrt{\frac{T}{\pi \rho /2}}\] \[=\frac{p}{2rl}\sqrt{\frac{T}{\pi \rho }}\] ??(ii) Comparing equations (i) and (ii), we get \[n'=n\]You need to login to perform this action.
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