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A system is changed from state A to stat...

A system is changed from state `A` to state `B` by one path and from `B` to `A` by another path. If `DeltaE_(1)` and `DeltaE_(2)` are the corresponding changes in internal energy, then

A

`E_(1) + E_(2) =-ve`

B

`E_(1) + E_(2)` = +ve

C

`E_(1) + E_(2)= 0`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
`Delta E= 0` for a cyclic process
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Knowledge Check

  • In a change from state A to state B

    A
    `q` depends only on the initial and final state
    B
    `w` depends only on the initial and final state
    C
    `DeltaE` depends only on the initial and final state
    D
    `DeltaE` depends upon the path adopted by `A` to change into `B`.

  • In a change from state A to state B:

    A
    "q" depends only on the initial and final state.
    B
    W depends only on the initial and final state.
    C
    `DeltaE` depends only on the initial and final state,
    D
    `DeltaE` depends upon the path adopted by "A" to change into "B"

  • A system is changed from state A to state B by one path and from B to A another path. If E_(1) and E_(2) are the corresponding changes in internal energy, then

    A
    `E_(1)+E_(2)=-ve`
    B
    `E_(1)+E_(2)=+ve`
    C
    `E_(1)+E_(2)=0`
    D
    None of these