Two ends of a conducting rod of varying cross-section are maintained at $20 0^{\circ}$ C and $0^{\circ}$ C. There are two sections of the rod, $A B$ and $C D$ , of the same thickness (Figure 4.30). In steady state:

Question

Two ends of a conducting rod of varying cross-section are maintained at 20 0 ∘ C and 0 ∘ C. There are two sections of the rod, A B and C D , of the same thickness (Figure 4.30). In steady state:

TestHub · Accepted Answer

The heat current H = x K A Δ T ​ is the same at every section. A B lies in the wider part, with the larger A , so Δ T = K A H x ​ is smaller for A B . C.

Physics - Heat & Thermo Question with Solution | TestHub

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