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  1. Figure below shows two paths that may be taken by a gas to go from a state A to a state C.

    In process AB, 400 J of heat is added to the system and in process BC, 100 J of heat is added to the system. The heat absorbed by the system in the process AC will be
    1. ​500 J
    2. 460 J
    3. 300 J
    4. 380 J
Correct Option: B

​In cyclic process ABCA
Qcycle = Wcycle

QAB + QBC + QCA = ar. of  ∆ABC ​+ 400 + 100 + QC→A =
1
(2 × 10-3)(4 × 104)
2

⇒​QC → A = – 460 J ​
⇒​QA → C = + 460 J



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