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A thermodynamic system is taken from an original state D to an intermediate state E by the linear process shown in the figure. Its volume is then reduced to the original volume from E to F by an isobaric process. The total work done by the gas from D to E to F will be

Options

  1. A- 450   J
  2. B450   J
  3. C900   J
  4. D1350   J

Correct answer

B. 450   J

Step-by-step solution

Total work done by the gas from D to E to F = Area of ∆ D E F Work done during the process D E is W DE = 1 2 600 + 300 5 - 2   J = 1350   J Work done during the process E F is W EF = - 300 × 3 = - 900   J W DEF = W DE + W EF = 450   J

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