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