JEE Main · PhysicsMedium
A Carnot engine operates between two reservoirs at temperatures and . If the engine performs of work in each cycle, the amount of heat rejected to the cold reservoir is:
- A.
- B.
- C.
- D.
Show correct answer & step-by-step solution
Correct answer: B —
Solution
- The efficiency of a Carnot engine is .
- Efficiency is also defined as , so .
- From the first law, .
- Hence the answer is (B).
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