Question

solve the following question

Three rods of Copper, Brass and Steel are welded together
to form a Y shaped structure. Area of cross-section of each
rod=4 cm². 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, 13 and 12 cms
respectively. The rods are thermally insulated from
surroundings excepts 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:

(a) 1.2 cal/s
(b) 2.4 cal/s
(c) 4.8 cal/s
(d) 6.0 cal/s

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Answer 1

c) 4.8 cal/s is the answer ✔️

Refer the attachment...