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underset(P(1), V(1), T(1))("State") A ov...

`underset(P_(1), V_(1), T_(1))("State") A overset("Rev")rarr underset(P_(2), V_(2), T_(2))("State B")`: If `P_(1) = P_(2)` then

A

`underset("universe")(Delta S) = 0`

B

`underset("universe")(Delta S) = 1`

C

`underset("universe")(Delta S) gt 0`

D

`underset("universe")(Delta S) lt 0`

Text Solution

Verified by Experts

The correct Answer is:
A
For reversible isobaric process `Delta underset("system")(S ) = nc_(P) "ln" (T_(2))/(T_(1)), Delta underset("surr")(S) = - nc_(P) "ln" (T_(2))/(T_(1))`
`:. Delta underset("universe")(S) = 0`
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