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Himanshu posted an Question
April 27, 2020 • 08:54 am 30 points
  • IIT JAM
  • Physics (PH)

Thermodynamics

solve this in the shortest way/ trick ?? . .

2 Answer(s) Answer Now
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    Ruby negi best-answer

    here is the solution.. Remember that the area under the curve of PV diagram is work done. so when the diagram is okay to find area then need not to go process by process, just find dW i.e area under the curve and u know dU=0 for cyclic process. so automatically dQ=dU.. best regard

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    Abhishek singh Best Answer

    For shortest method/trick. You should remember one thing here. for a cyclic process, change in state function is zero, i.e. change in internal energy (dU=0). So you don't need to calculate dU, it means dQ=dW, hence calculate dW for the process (it will give you dQ, as dQ=dW). This is the trick here. Solution attached. Best regards.

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    Shanu arora

    hereis the detailed solution. the easiest solution for cyclic systems is to find the area of the figure to calculate workdone in pv diagrams ,but here the figure is not so easy hence have to follow a easy procedure , I have tried to make it as descriptive as possible ,hope it helps you, feel free for any doubts

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