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VMMC VMMC Medical Solved Paper-2004

  • question_answer
    Two charged spheres separated by a distance d exert some force F on each other. If they are immersed in a liquid of dielectric constant 2, then the force exerted by them, if all other conditions are same, is

    A) 4 F                                         

    B) 2 F                         

    C) F                             

    D)        F/2

    Correct Answer: D

    Solution :

    The force between charged spheres is given by \[F=\frac{1}{4\pi {{\varepsilon }_{0}}}.\frac{{{q}_{1}}{{q}_{2}}}{{{r}^{2}}}\]                 and \[{{F}_{K}}=\frac{1}{K.4\pi {{\varepsilon }_{0}}}.\frac{{{q}_{1}}{{q}_{2}}}{{{r}^{2}}}=\frac{F}{K}=\frac{F}{2}\]


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