Q. A Carnot engine whose low temperature reservoir is at $7℃$ has an efficiency of 50%. It is desired to increase the efficiency to 70%. By how many degrees should the temperature of the high temperature reservoir be increased?
A) 840 K
B) 280 K
C) 560 K
D) 380 K
Explanation
The correct answer is Option D: 380 K.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.