A heat engine absorbs heat Q1 at temperature T1 and heat Q2 at temperature T2. Work done by the engine is J (Q1 + Q2). This data :

Question

A heat engine absorbs heat Q₁ at temperature T₁ and heat Q₂ at temperature T₂. Work done by the engine is J (Q₁ + Q₂). This data :

violates 1^st law of thermodynamics

violates 1^st law of thermodynamics if Q₁ is +ve

violates 1^st law of thermodynamics if Q₁ is -ve

does not violates 1^st law of thermodynamics

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