Question: One reversible heat engine operates between 1600 K and T2 , and another reversible heat engine operates between T2 and 400 K. If both the

One reversible heat engine operates between 1600 K and T2 , and another reversible heat engine operates between T2 and 400 K. If both the engines have the same heat input and output, then the temperature T2 must be equal to :

(a) 1000 K

(b) 1200 K

(c) 1400 K

(d) 800 K

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