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For which combination of working tempera...

For which combination of working temperatures, the efficiency of 'Carnot's engine' is the least?

A

40 K, 20 K

B

60 K, 40 K

C

100 K, 80 K

D

80 K, 60 K

Text Solution

Verified by Experts

The correct Answer is:
C
Efficiency, `eta =1 - (T_(2))/(T_(1))`
`therefore` For the combination (c) i.e., 100 K, 80 K the efficiency will be least.
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