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Three processes form a thermodynamic cycle as shown on P-V diagram for an ideal gas Process 1 → 2 takes place at constant temperature (300K).Process 2 rightwards arrow 3 takes place at constant volume During this process 40J of heat leaves the system Process 3 rightwards arrow 1 is adiabatic and temperature T3 is 275K. Work done by the gas during the process
3 rightwards arrow 1 blankis

  1. -40J    
  2. -20J    
  3. +40J    
  4. +20J    

The correct answer is: -40J

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