Question

state and explain law of thermal conductivity and hence define coefficient of thermal conductivity​

Answer 1

Explanation:

A measure of the ability of a material to allow the flow of heat from its warmer surface through the material to its colder surface, determined as the heat energy transferred per unit of time and per unit of surface area divided by the temperature gradient, which is the temperature difference divided by the distances between the two surfaces (the thickness of the material), expressed in watts per kelvin per meter.

Coefficient of thermal conductivity:=A(θ2−θ1)tQd. Cefficient of thermal conductivity of the material of solid is equal to the rate of flow heat per unit area per unit temperature gradient across the solid.

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Answer 2

Answer:

Co-efficient of thermal conduction is quantity of heat that flows normally per second per unit are per thickness when the surface is maintained at steady state, temperature difference between the ends at 1K

Explanation:

Co-efficient of thermal conductivity

K= Qd

A(θ1-θ2)t