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A system undergoes a cyclic process in w...

A system undergoes a cyclic process in which it absorbs `Q_(1)` heat and gives out `Q_(2)` heat. The efficiency of the process is `eta` and work done is `W.` Select correct statement:

A

`W=Q_(1)-Q_(2)`

B

`eta=(W)/(Q_(1))`

C

`eta=(Q_(2))/(Q_(1))`

D

`eta=1-(Q_(2))/(Q_(1))`

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