Determine the thermal conductivity, Mechanical Engineering

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A rod of 80mm diameter and 10mm length with thermal conductivity 16W/m-deg protrudes from a surface at 160 ^oC. The rod is exposed to air at 30 ^oC with convective coefficient of 25W/m²deg. How does the heat flow from this rod get affected if the similar material volume is used for two fins of the same length? Consider short fin with end insulated.

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