Question

The efficiency of an ideal heat engine working between the freezing point and boiling point of water, is :- 

(1) 26.8% 

(2) 20% 

(3) 6.25% 

(4) 12.5%

Answer 1

(1) The freezing point and boiling point of water, is  26.8%.

Answer 2

_{efficiency = (T1 - T2 / T1) * 100}

efficiency = 100/ 373 * 100

efficiency = 26.8