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Thermodynamics — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsThermodynamics1 Mark
MCQ
Which is the correct statement
  • ✓
    For an isothermal change $P V=$ constant
  • B
    In an isothermal process the change in internal energy must be equal to the work done
  • C
    For an adiabatic change $\frac{P_2}{P_1}=\left(\frac{V_2}{V_1}\right)^\gamma$, where $\gamma$ is the ratio of specific heats
  • D
    In an adiabatic process work done must be equal to the heat entering the system
✓

Answer

Correct option: A.
For an isothermal change $P V=$ constant
(a) Since $P V=R T$ and $T=$ constant; $\therefore P V=$ constant.

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