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An ideal gas after going through a serie...

An ideal gas after going through a series of four thermodynamic states in order, reaches the initial state again (cyclic process). The amounts of heat (Q) and work (W) involved in the states are,
`Q_(1) = 6000J, Q_(2)= -5500 J,`
`Q_(3)=-3000 J, Q_(4)=3500 J`
`W_(1)=2500J, W_(2)=-1000 J,`
`W_(3)=-1200 J, W_(4)=xxJ`
The ratio of net work done by the gas to the total heat absorbed by the gas in η. The value of x and `eta` are nearly :-

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