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Figure, shows the variation of potential...

Figure, shows the variation of potential energy `(U)` of 2 mol of Argon gas with its density in a cyclic process `ABCA`. The gas was initiallly in the state `A` whose pressure and temperature are `P_(A)=2 atm, T_(A)=300K`, respectively. It is also stated the path `AB` is a rectangular hyperbola and the internal energy of the gas at state `C` is `3000r`. Based on the above information answer the following question `:`

Heat supplied in the process `CA` is

A

`-1400R`

B

`1400R`

C

`2100R`

D

`-2100R`

Text Solution

Verified by Experts

The correct Answer is:
D
`CA` is isochoric. Therefore `W_(CA)` is zero.
`Q_(CA)=U_(CA)`
`=U_(A)-U_(C)`
`=900R-3000R`
`=-2100R`
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CENGAGE PHYSICS-KINETIC THEORY OF GASES AND FIRST LAW OF THERMODYNAMICS-Comprehension
  1. Figure, shows the variation of potential energy (U) of 2 mol of Argon ...

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  2. Figure, shows the variation of potential energy (U) of 2 mol of Argon ...

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  3. Figure, shows the variation of potential energy (U) of 2 mol of Argon ...

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