MCQ
A thermo-dynamical system is changed from state $({P_1},\,{V_1})$ to $({P_2},\,{V_2})$ by two different process. The quantity which will remain same will be
  • A
    $\Delta \,Q$
  • B
    $\Delta \,W$
  • C
    $\Delta Q + \Delta W$
  • $\Delta Q - \Delta W$

Answer

Correct option: D.
$\Delta Q - \Delta W$
d
Change in internal energy does not depend upon path so $\Delta U = \Delta Q - \Delta W$ remain constant.

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