A) \[\frac{T}{3}\]
B) \[\frac{T}{2}\]
C) \[\frac{T}{\sqrt{2}}\]
D) \[T\sqrt{2}\]
Correct Answer: D
Solution :
Due to wood moment of inertia of the system becomes twice but there is no change in magnetic moment of the system. Hence by using \[T=2\pi \,\sqrt{\frac{I}{M{{B}_{H}}}}\,\,\Rightarrow \,\,T\propto \sqrt{I}\Rightarrow T'\,\,=\,\,\sqrt{2}\,T\]You need to login to perform this action.
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