AP EAMCET20225 Jul 2022Morning ShiftPhysicsThermodynamicsActual
The work done by a Carnot engine operating between 300 ~K and 400 ~K is 400 ~J . The energy exhausted by the engine is
Options
- A800 ~J
- B1200 ~J
- C400 ~J
- D1600 ~J
Correct answer
B. 1200 ~J
Step-by-step solution
Given, source temperature, T₁=400 ~K Sink temperature, T₂=300 ~K Work done, W=400 ~J We know that, efficiency of carnot heat engine = W Q =1- T₂ T₁ W Q =1- T₂ T₁ 400 Q =1- 300 400 400 Q = 1 4 Q=1600 ~J Energy exhausted by the heat engine =Q-W=1600-400=1200 ~J