A metallic block of mass 1 kg and specific heat 1 cal/gm ∘ C is connected to three identical rods as shown in diagram. Temperature of A, B and C are maintained at 1 0 ∘ C, 5 ∘ C and 3 ∘ C respectively

Question

A metallic block of mass 1 kg and specific heat 1 cal/gm ∘ C is connected to three identical rods as shown in diagram. Temperature of A, B and C are maintained at 1 0 ∘ C, 5 ∘ C and 3 ∘ C respectively. Find the final temperature of 1 kg block in Celsius scale. (Neglect any heat loss to the radiation).

TestHub · Accepted Answer

Final (steady) state: net heat flow into the block is zero. Identical rods have equal conductance K : K ( 10 − T ) + K ( 5 − T ) + K ( 3 − T ) = 0 18 = 3 T ⇒ T = 6 ∘ C Answer: 6.

Physics - Heat & Thermo Question with Solution | TestHub

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