Three rods of Copper, Brass and Steel are welded together to form a Y-shaped structure. Area of cross-section of each rod is 4cm2. End of copper rod is maintained at 100∘C. Where as ends of brass and steel are kept at 0∘C. Lengths of the copper, brass and steel rods are 46,13and 12cms respectively. The rods are thermally insulated from surroundings except at ends. Thermal conductivities of copper, brass and steel are 0.92,0.26 and 0.12 CGS units respectively. Rate of heat flow through copper rod is :
Held on 6 Apr 2014 · Verified 6 Jul 2026.
1.2Cal/s
2.4Cal/s
4.8Cal/s
6.0Cal/s
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