An engine operates between temperature limits of 900 K and T. Another heat engine operates between T and 400 K. For both to be equally efficient, the values of T will be

An engine operates between temperature limits of 900 K and T. Another

1.	An engine operates between temperature limits of 900 K and T. Another heat engine operates between T and 400 K. For both to be equally efficient, the values of T will be
A.	700 K
B.	600 K
C.	750 K
D.	650 K
Answer» C. 750 K

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An engine operates between temperature limits of 900 K and T. Another heat engine operates between T and 400 K. For both to be equally efficient, the values of T will be

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