A) \[\frac{1}{6}m\]
B) \[6m\]
C) \[\frac{1}{36}m\]
D) \[36m\]
Correct Answer: A
Solution :
[a] \[Case-1\text{ }\,\,T=2\pi \sqrt{\frac{\ell }{g}}~~~~~~~~~~......(1)\] \[2=2\pi \sqrt{\frac{\ell }{g}}~\] \[Case-2\text{ }\,\,T''\,\,2=2\pi \sqrt{\frac{\ell '}{{}^{g}/{}_{6}}}~~~~~~~~~~......(2)\] From (1) and (2) \[\ell '=\frac{1}{6}m\]
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