Q. The unit of thermal conductivity is __________.

तापीय चालकता की इकाई __________ है।

A
J/kg·K
जे/किग्रा·के
B
W/m·K
डब्ल्यू/एम·के
C
J/s
जे/एस
D
W·s
डब्ल्यू·एस

Explanation

Thermal conductivity measures how well a material conducts heat. Its SI unit is:

W/m.k

=WattmeterKelvin
\text{W/m·K} = \frac{\text{Watt}}{\text{meter} \cdot \text{Kelvin}}

This tells you how much heat (in Watts) passes through 1 meter thickness of material for every 1 K temperature difference across it.

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