NCERT Example 10.7 - Thermal Properties of Matter
Question: Iron bar (0.1 m, 0.02 m^2, K = 79 W/(m K)) and brass bar (0.1 m, 0.02 m^2, K = 109 W/(m K)) joined end to end. Ends at 373 K and 273 K. Find (i) junction temperature, (ii) equivalent thermal conductivity, (iii) heat current.
Answer: (i) T_0 = **315 K**; (ii) K' = **91.6 W m^-1 K^-1**; (iii) H = **about 916 W**.
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