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A solid sphere of radius $r$ is floating at the  interface of two immiscible liquids of densities $\rho_1$ and $\rho_2\,\, (\rho_2 > \rho_1),$ half of its volume lying in each. The height of the upper liquid column from the interface of the two liquids is $h.$ The force exerted on the sphere by the upper liquid is $($ atmospheric pressure $= p_0\,\,\&$ acceleration due to gravity is $g) $
  • A$p_0\pi r^2 + (h -2/3r)\pi r^2\rho_1g$
  • B$(h -2/3r)\pi r^2\rho_1g$
  • C$2/3r\pi r^2\rho_1g$
  • D$p_0\pi r^2$
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