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A thermodynamic system is taken from an initial state i with internal energy U i = 100 J to the final state f along two different paths iaf and ibf, as schematically shown in the figure. The work done by the system along the paths af, ib and bf are w a f = 200 J , W i b = 50 J and W b f = 100 J respectively. The heat supplied to the system along the path iaf, ib and bf are iaf ib Q i a f , Q i b and Q b f respectivel

Correct answer

2

Step-by-step solution

Process iaf Process W(in Joule) ∆ U (in Joule) Q(in Joule)i ia 0 af 200 Net 300 200 500 ⇒ U f = 400 Joule Process ibf Process W(in Joule) ∆ U (in Joule) Q(in Joule)i ib 100 50 150 Bf 200 100 300 Net 300 150 450 ⇒ Q b f Q i b = 300 150 = 2

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