Q. Which of the following expressions represents the first law of thermodynamics?
A) $\mathrm{\Delta}E = - q + W$
B) $\mathrm{\Delta}E = q - W$
C) $\mathrm{\Delta}E = q + W$
D) $\mathrm{\Delta}E = - q - W$
Explanation
The correct answer is Option C: $\mathrm{\Delta}E = q + W$.
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.