Question

In Lee’s disc method to determine thermal conductivity of bad conductor, during the part to find rate of cooling, the total area responsible for radiation is



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Answer 1

To determine thermal conductivity of a bad conductor (glass) in form of a disc using Lee's method. where H is the steady state rate of heat transfer, k is the thermal conductivity of the sample, A is the cross sectional area and (T 2 – T1) is the temperature difference across the sample thickness 'x'.

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