A steel and a copper bar are joined end to end. The area of the steel bar is half the area of the copper bar. Their lengths are equal to 10cm each. Temperature of free ends of steel & copper rod are 0°C & 100°C respectively. KS = 50 J/smK & KC =384 J/smK. Calculate equivalent thermal conductivity of the combined bar.

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MCQs on temperature measurement, ideal-gas equation, absolute temperature, thermal expansion, matter specific heat capacity, calorimetry, state changes, heat transfer and cooling newtons law.


A steel and a copper bar are joined end to end. The area of the steel bar is half the area of the copper bar. Their lengths are equal to 10cm each. Temperature of free ends of steel & copper rod are 0°C & 100°C respectively. K<sub>S</sub> = 50 J/smK & K<sub>C</sub> =384 J/smK. Calculate equivalent thermal conductivity of the combined bar.






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