Q. The unit of thermal conductivity is :
A) J m $K^{-1}$
B) J $m^{-1}$ $K^{-1}$
C) W m $K^{-1}$
D) W $m^{-1}$ $K^{-1}$
Explanation
[Solution] From $\frac{dQ}{dt} = KA\frac{\Delta T}{L}$, K has units W $m^{-1}$ $K^{-1}$. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.