Q138 / 160 · AP EAMCET 2018 (24 Apr Shift 2) · Physics

$2.8 \mathrm{~g}$ of nitrogen gas is in a vessel at a temperature $127^{\circ} \mathrm{C}$. The amount of heat energy required to increase the rms speed of the nitrogen molecules by $41.4 \%$ is $\left(\mathrm{R}=8.31 \mathrm{~J} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}\right)$

  • A
    $376 \mathrm{~J}$
  • B
    $415 \mathrm{~J}$
  • C
    $1662 \mathrm{~J}$
  • Correct answer
    D
    $831 \mathrm{~J}$

Hence, the correct answer is option: 'D'.

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