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
(a) violates 1^st law of thermodynamics
(b) violates 1^st law of thermodynamics if Q₁ is –ve
(c) violates 1^st law of thermodynamics if Q₂ is –ve
(d) does not violate 1^st law of thermodynamics.

Answer 1

(d) : It does not violate first law of thermodynamics but violates second law of thermodynamics.