TS EAMCET 14-Sep-2020 Shift 2 Solved Paper

Section: Physics
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Question : 99 of 160
 
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A Carnot engine C1 operates between temperature T1 and T2 (T1 > T2). A second Carnot engine C2 uses all the heat rejected by the engine C1 and operates between temperature T2 and T3 (where T2 > T3). The efficiency of this combined (C1 and C2 together) engine is
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