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JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2010

  • question_answer
        Three charged particles are initially in position\[-1\]. They are free to move and they come to position-2, after some time. Let\[{{U}_{1}}\]and\[{{U}_{2}}\]be the electrostatic potential energies in position\[-1\]and 2 then

    A)  \[{{U}_{1}}={{U}_{2}}\]               

    B)  \[{{U}_{2}}\ge {{U}_{1}}\]

    C)  \[{{U}_{2}}>{{U}_{1}}\]               

    D)  \[{{U}_{1}}>{{U}_{2}}\]

    Correct Answer: D

    Solution :

                    The system of particles when left to themselves tend to move towards position where their potential energy is minimum. Therefore,\[{{U}_{2}}<{{U}_{1}}\]or\[{{U}_{1}}>{{U}_{2}}\]


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