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Two rods of equal length and diameter have thermal conductivities 3 and 4 units respectively. If they are joined in series, the thermal conductivity of the combination would be:
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Correct option is A
In series Keq=∑li∑liKi=l+ll3+l4=247=3.43.Similar Questions
Two rods A and B of different materials are welded together as shown in Fig. If their thermal conductivities are k1 and k2, the thermal conductivity of the composite rod will be
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