A) 11%
B) 21%
C) 42%
D) 10.5%
Correct Answer: D
Solution :
\[T=2\pi \sqrt{\frac{l}{g}}\] \[\Rightarrow \] \[\frac{\Delta T}{T}=\frac{1}{2}\frac{\Delta l}{l}\] Given, \[\frac{\Delta l}{l}=21%\] \[\therefore \] \[\frac{\Delta T}{T}=\frac{1}{2}\times 21%=10.5%\]You need to login to perform this action.
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