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Assertion: In an isothermal proces, whol...

Assertion: In an isothermal proces, whole of heat energy supplied to the body id converted into work.
Reason: According to first law of thermodynamics `DeltaQ=DeltaU+PDeltaV`

A

If both assertion and reason are true and the reason is correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true, but the reason is false.

D

If assertion is false but the reason is true

Text Solution

Verified by Experts

The correct Answer is:
D
In isothermal process, internal energy of the system does not change. Thus, from `1^(st)` law of thermodynamics:
`DeltaQ=DeltaU+PDeltaV`
we have, `DeltaQ=PDeltaV = DeltaW (:' DeltaU=0)`
Thus, in isothermal process whole of the heat energy supplied to the body is use in doing work angainst external work.
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