Question:-
A reversible heat engine receivers 6 kJ of heat from thermal reservoir at temperature 800 K, and 8 kJ of heat from another thermal reservoir at temperature 600 K. if it rejects heat to a third thermal reservoir at temperature 100 K, then the thermal efficiency of the engine is approximately equal to:
Option (A)
65%.
Option (B)
75%
Option(C)
80%
Option(D)
85%
Correct Option:
(D)
question-answer-faq-9626