EAMCET Medical EAMCET Medical Solved Paper-2005

  • question_answer
    A body of density D and Volume V is lifted through height h in a liquid of density D Volume V is lifted through height in  a liquid of density d (<D). The increase in potential energy of the body is:

    A)  V (D-d) hg                         

    B)  VDgh

    C)   Vdgh                                  

    D)  V (D + d) gh

    Correct Answer: A

    Solution :

                     Since, the body is lifted through a distance in the liquid then work done against the buoyant force will be stored as the potential energy of the body. \[\therefore \]Potential energy of the body = work done by body during displacement - work done by the liquid against body \[=VDg\times h-Vdg\times h\] Potential energy of body \[=V(D-)hg\]


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