Q. If the temperature difference on the two sides of a wall increases from $100℃$ to $200℃$, its thermal conductivity
A) Remains unchanged
B) Is doubled
C) Is halved
D) Becomes four times
Explanation
(a) Thermal conductivity is independent of temperatures of the wall, it is a constant for the material, so it will remain unchanged
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.