Q. The efficiency of an ideal heat engine working between the freezing point and boiling point of water, is
A) 6.25%
B) 20%
C) 26.8%
D) 12.5%
Explanation
[Solution] $\eta = 1 - \frac{273}{373} = 26.8\%$. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.