A reversible heat engine operates between temperatures 900 k and t2(t2<900k), another reversible engine between t2 & 400k (t2>400k) in series. What is the value of t2 if work output of both the engines are equal
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Explanation:
T1-T2/Ti = T2-T3/T2.
Ti = 1600k.
T2 = ?k.
T3 = 400k.
1600-T2/1600 = T2-400/T2.
1600T2-T2*T2 = 1600T2-640000.
T2 square = 640000.
T2 = 800k.
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