An insulated box containing a diatomic gas of molar mass $m$ is moving with velocity $v$. The box is suddenly stopped. The resulting change in temperature is :-

  • A

    $\frac{mv^2}{2R}$

  • B

    $\frac{mv^2}{3R}$

  • C

    $\frac{mv^2}{5R}$

  • D

    $\frac{2mv^2}{5R}$

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