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What is the thermal conductivity of a perfect heatconductor and a perfect heat insulator?​

Answer»

Thermal conductivity : It is defines as the ability of a SOLID to conduct heat.Mathematically : k = ( Δ  Q / Δ t ) / ( A × Δ T / Δ x ) Now : Thermal conductivity of a perfect heat conductor is infinity . i.e. k =  ( Δ  Q / Δ t ) / 0  k = ∞   [  Δ T = 0 ] Also thermal conductivity of a perfect heat insulator is zero .i.e. k = ( Δ  Q / Δ t ) / ( A × Δ T / Δ x ) k = 0 / ( A × Δ T / Δ x )   [ Δ  Q = 0 ] k = 0 .READ more : The temperature of a black BODY is increased from 200 K  to 400 K. How will the RATIO of emission of energy change?​brainly.in/question/15893744



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