Two identical capacitors have same capacitance $C$. One of them is charged to the potential $\mathrm{V}$ and other to the potential $2 \mathrm{~V}$. The negative ends of both are connected together. When the positive ends are also joined together, the decrease in energy of the combined system is :

  • [JEE MAIN 2024]
  • A

    $\frac{1}{4} \mathrm{CV}^2$

  • B

    $2 \mathrm{CV}^2$

  • C

    $\frac{1}{2} \mathrm{CV}^2$

  • D

    $\frac{3}{4} \mathrm{CV}^2$

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