Q. The total internal energy change for a reversible isothermal cycles is

A) Always 100 calories per degree
B) Always negative
C) Zero
D) Always positive
Explanation

The correct answer is Option C: Zero.

A detailed explanation for this question is being prepared.

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.