AP EAMCET · PHYSICS · Thermal Properties of Matter
Three rods of same dimensions have thermal conductivities \(3 K\), \(2 K\) and \(K\). They are arranged as shown in the figure below. Then in the steady state the temperature of the junction \(P\) is
- A \(\frac{200}{3}{ }^{\circ} \mathrm{C}\)
- B \(\frac{100^{\circ}}{3}{ }^{\circ} \mathrm{C}\)
- C \(75^{\circ} \mathrm{C}\)
- D \(\frac{50}{3}{ }^{\circ} \mathrm{C}\)
Answer & Solution
Correct Answer
(A) \(\frac{200}{3}{ }^{\circ} \mathrm{C}\)
Step-by-step Solution
Detailed explanation
Amount of heat transmitted from one point to another is \( Q=\frac{k A t\left(T_1-T_2\right)}{d} \) where, \(k\) is thermal conductivity, \(t\) is time and \(T_1-T_2\) is temperature difference. At junction,…
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