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InterviewSolution
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A system goes from P to Q by two different paths in the `p-V` diagram as shown in figure. Heat given to the system in path 1 is 1000 J. The work done by the system along path 1 is more than path 2 by 100 J. What is the heat exchanged by the system in path 2 ? |
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Answer» For path 1, Heat given `Q_(1)` = + 1000J ltBrgt Work done = `W_(1)` (let) For path 2, `" "` Work done `(W_(2))=(W_(1)-100)J` Heat given `Q_(2)`= ? As change in internal energy between two states for different path is same. `therefore " "DeltaU=Q_(1)-W_(1)=Q_(2)-W_(2)` `" "1000-W_(1)=Q_(2)-(W_(1)-100)` `rArr" "Q_(2)=1000-100=900J` |
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