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:

Options

A. Violets first law of thermodynamics
B. Violets fistl law of thermodynamics if `Q_(1)=-ve`
C. Violets first law of thermodynamics if `Q_(2)=+ve`
D. Does not violet first law of thermodynamics

Answer

d

Explanation

Some mechanical energy is always converted to other form of energy or total heat can not be converted to useful work. This is `II` law of thermodynamics.