Equal temperature differences exist between the ends of two metallic rods 1 and 2 of…
Physics · JEE Advanced · NTA Exams — Thermodynamics
Equal temperature differences exist between the ends of two metallic rods 1 and 2 of equal lengths. Their thermal conductivities are Kl and K2 and area of cross-section are Al and A2, respectively. The condition of equal rates of heat transfer is :
- K1A2 =K2A1
- K1A1 = K2A2
- K1A12 = K2A22
- K12A2 = K22A1
Answer
(B) K 1 A 1 = K 2 A 2
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