The efficiency of a Carnot engine operating between temperatures of `100^(@)C` and `-23^(@)C` will be

The efficiency of a Carnot heat engine working between temperatures 127^(@)C and 27^(@)C is

Calculate the efficiency of a carnot engine working between the two temperatures: 30^(@)Cand 100^(@)C

The efficiency of carnot engine working between temperatures 200^@ C and 0^@ C is eta_1 . The efficiency of this engine is eta_2 when it work between temperatures 0^@ C and -200^@ C . Then eta_1/eta_2 =_____

Efficiency of Carnot engine is 100% if