Question

According to the first law of thermodynamics, the amount of work done by a heat engine equals the amount of
A. waste heat it produces.

B. work done on the engine.

C. thermal energy added to the engine plus the waste heat.

D. thermal energy added to the engine minus the waste heat.

Answer 1

W=Q1-Q2

Answer 2

Q1=heat added to the engine

Answer 3

Q2=heat release from the engine to sink

Answer 4

Response plz for better understanding

Answer 5

here
Q1>Q2
T1>T2

Answer 6

It has to be the option D and the reason is perfect which is given by @shamim