21) Define coefficient of thermal conductivity. State its SI unit and dimension.
The temperature difference between two sides of an iron plate, 2cm thick, is 10°C. Heat is
transmitted through the plate at the rate of 600 kcal per minute per square meter at steady state.
Find thermal conductivity of iron.
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Answer:
Coefficient of thermal conductivity of the material of a solid is equal to the rate of flow of heat per unit area per unit temperature gradient across the solid. Its unit is W m-1 K-1.
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Coefficient of thermal conductivity of the material of a solid is equal to the rate of flow of heat per unit area per unit temperature gradient across the solid. Its unit is W m-1 K-1.
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