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PhysicsJEE Main 8 Apr 2026, Shift 2·Q11·MCQ·Moderate

Thermodynamics · Thermodynamic processes

Initial pressure and volume of a monoatomic ideal gas are PP and VV. The change in internal energy of this gas in adiabatic expansion to volume Vfinal=27 VV_{\text{final}} = 27\,V is J.
  1. (1)−2PV(33−1)-2PV\left(3\sqrt3 - 1\right)
  2. (2)43PV\dfrac43 PV
  3. (3)−43PV-\dfrac43 PV
  4. (4)34PV\dfrac34 PV

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