JEE Main 2019 Physics question
Two Carnot engines A and B are operated in series. The first one, A, receives heat at (= 600 K) and rejects to a reservoir at temperature . The second engine B receives heat rejected by the first engine and, in turn, rejects to a heat reservoir at (= 400 K). Calculate the temperature if the work outputs of the engines are equal:
Answer: (A)
Solution
Equal work ⇒ ⇒ = 500 K.