Q 1551401324.     An ideal gas is subjected to cyclic process involving four thermodynamic states, the amounts of heat (Q) and work (W) involved in each of these states are
`Q_1 = 6000 J`
`Q_2 = - 5500 J`
`Q_3 = - 3000 J`
`Q_4 = 3500 J`
`W_1 = 2500 J`
`W_2 = -1000 J`
`W_3 = -1200 J`
`W_4 = x J`
The ratio of the net work done by the gas to the total heat absorbed by the gas is `eta` . The values of `x` and `eta ` respectively are

BITSAT 2009
A

`500; 7.5%`

B

`700; 10.5%`

C

`1000; 21%`

D

`1500; 15%`

HINT

fFrst law of thermodynamics `Q = Delta U + W` For cyclic process `DeltaU = 0`

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