SI units of thermal conductivity are

W/m - K.

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W/m

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W/K

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None

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Solution

The correct option is A W/m - K.
From the formula:
Rate of heat flow $= \frac{(k \times A \times (C h a n g e o f t e m p))}{T h i c k n e s s}$
Units of $k$ are $W / m - K$ .

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