The two ends of a rod of length L and a uniform cross-sectional area A are kept at two temperatures $ T_1 $ and $ T_2 $ ($ T_1 T_2 $). The rate of heat transfer, $ \frac{dQ}{dt} $, through t

Question

The two ends of a rod of length L and a uniform cross-sectional area A are kept at two temperatures $T_1$ and $T_2$ ( $T_1 > T_2$ ). The rate of heat transfer, $\frac{dQ}{dt}$ , through the rod in a steady state is given by:

A

$\frac{k(T_¹⁻ T_2)}{LA}$

B

$kL \Delta (T_¹⁻ T_2)$

C

$\frac{kA(T_¹⁻ T_2)}{L}$

D

$\frac{kL(T_¹⁻ T_2)}{A}$

Accepted Answer

$ \frac{kA(T_¹⁻ T_2)}{L} $

Answer

$ \frac{k(T_¹⁻ T_2)}{LA} $

Answer

$ kL \Delta (T_¹⁻ T_2) $

Answer

$ \frac{kL(T_¹⁻ T_2)}{A} $

AIPMT PRELIMS 2009 Physics Heat Transfer MCQ Question

Correct Answer

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