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A heat engine absorbs heat Q(1) at tempe...

A heat engine absorbs heat `Q_(1)` at temperature `T_(1)` and `Q_(2)` at temperature `T_(2)` . Work done by the engine is `(Q_(1)+Q_(2))` . This data:

A

Violates Ist law of thermodynamics

B

Violates Ist law of thermodynamics if `Q_(1)` is –ve

C

Violates Ist law of thermodynamics if `Q_(2)` is –ve

D

Does not violate Ist law of thermodynamics

Text Solution

Verified by Experts

The correct Answer is:
D
According to first law of thermodynamics if `DeltaU = 0` the work done can be equal to `Q_1 + Q_2` but according to second law of thermodynamic 100% efficiency is not possible so it violates `2^(nd)` laq of thermodynamics.
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