Question

On heating one end of a rod, the temperature of the whole rod will be uniform when

• A. $K=1$
• B. $K=0$
• C. $K=100$
• D. $K=\infty$

Answer 1

Answer: (D)

$H=\frac{KA\Delta T}{\Delta x}$
Temperature is uniform means, $\Delta T=0$
$\Rightarrow \left(\frac{\Delta T}{\Delta x}\right)=\frac{H}{KA}=0$
if $K=\infty$