AP EAMCET · PHYSICS · Thermal Properties of Matter
A slab consists of two identical plates of copper and brass. The free face of the brass is at \(0^{\circ} \mathrm{C}\) and that of copper at \(100^{\circ} \mathrm{C}\). If the thermal conductivities of brass and copper are in the ratio \(1: 4\), then the temperature of interface is
- A \(20^{\circ} \mathrm{C}\)
- B \(40^{\circ} \mathrm{C}\)
- C \(60^{\circ} \mathrm{C}\)
- D \(80^{\circ} \mathrm{C}\)
Answer & Solution
Correct Answer
(D) \(80^{\circ} \mathrm{C}\)
Step-by-step Solution
Detailed explanation
\(\begin{aligned} & \mathrm{K}_2: \mathrm{K}_1=1: 4, \\ & \mathrm{~T}_1=0^{\circ} \mathrm{C}, \mathrm{T}_2=100^{\circ} \mathrm{C}\end{aligned}\)…
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