A body of volume \( V \) and density \( \rho \) is initially submerged in a non-viscous liquid o...

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A body of volume \( V \) and density \( \rho \) is initially submerged in a non-viscous liquid of density \( \sigma \) ( \( \rho \) ). If it rises by itself through a height \( h \) in the liquid, its kinetic energy will
(a) increase by \( h V(\sigma-\rho) g \)
(b) increase by \( h V(\rho+\sigma) g \)
(c) increase by \( \frac{h V \rho g}{\sigma} \)
(d) decrease by \( \frac{h V \rho g}{\sigma} \)
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