Q. Efficiency of Carnot engine is 100% if
A) $T_{2} = 273\ K$
B) $T_{2} = 0\ K$
C) $T_{1} = 273\ K$
D) $T_{1} = 0\ K$
Explanation
(b) $\eta = 1 - \frac{T_{2}}{T_{1}}$ for 100%, efficiency $\eta = 1$ which gives $T_{2} = 0\ K$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.