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InterviewSolution
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The work done in adiabatic compression of `2` mole of an ideal monoatomic gas by constant external pressure of `2 atm` starting from initial pressure of `1 atm` and initial temperature of `30 K(R=2 cal//"mol-degree")` |
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Answer» Correct Answer - 72 `q=0, DeltaU=W` `nC_(1)(T_(2)-T_(2))= -P_(ext)(V_(2)-V_(1))` `n(3)/(2)R(T_(2)-30)= -2 ((nRT_(2))/(2)-(nRxx30)/(1))` `rArr (3)/(2)(T_(2)-30)=(60-T_(2))rArrT_(2)=42K` `W=nC_(v)(T_(2)-T_(1))=2xx(3)/(2)xx2(42-30)=72 cal` |
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