In a Carnot engine, when T2 = 0°C and T1 = 200°C, its efficiency is η1 and when T1 = 0°C and T2 = –200°C, its efficiency is η2, then what is η1 /η2 ?

(1) 0.577

(2) 0.733

(3) 0.638

(4) Can not be calculated

Concept Videos :-

#48 | Introduction to Heat Engine
#49 | Solved Example: 23
#50 | Refrigerator
#52 | Carnot Engine
#53 | Carnot Cycle
#54 | Solved Example: 24
#55 | Solved Example: 25

Concept Questions :-

Heat engine and refrigerator
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