Questions
Three rods made of the same material and having the same cross-section have been joined as shown in the figure. Each rod is of the same length. The left and right ends are kept at respectively. The temperature of the junction of the three rods will be
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a
45°C
b
60°C
c
30°C
d
20°C
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Correct option is B
Q1t+Q2t=Qt KA(90−θ)L+KA(90−θ)L =KA(θ−0)L =180−2θ=θ ⇒θ=60∘Similar Questions
Water can be heated in a cup of paper because:
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