Two metal rods have their thermal conductivities K1 and K2 in the ratio 3 : 2 so that their thermal resistance are the same . Then their lengths are is the ratio ( Area of C .S . are the same )
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Answer:
3:2
Explanation:
Thermal resistance = L/KA
L1/K1A1=L2/K2A
L1/L2=K1/K2
=3:2
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