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An ideal gas undergoes a process ArarrBr...

An ideal gas undergoes a process `ArarrBrarrC` shown in `P-V` graph. Then total heat given to the gas during the whole process `(ArarrBrarrC)` is `nxx10^(4)J`, then `n` is:

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The correct Answer is:
8
For process `ArarrBrarrC,DeltaU=0`
`implies` From `1^(st)` law of thermodynamics
`Q=W=PDeltaV`
`=400000xx0.2J`
`=80kJ`
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