The metallic bob of a simple pendulum has the P relative density \(...

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The metallic bob of a simple pendulum has the
P relative density \( \rho \). The time period of this

W pendulum is \( T \). If the metallic bob is immersed in water, then the new time period is given by
(1) \( T \frac{\rho-1}{\rho} \)
(2) \( T \frac{\rho}{\rho-1} \)
(3) \( T \sqrt{\frac{\rho-1}{\rho}} \)
(4) \( T \sqrt{\frac{\rho}{\rho-1}} \)
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