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The unit of thermal conductivity is :...

The unit of thermal conductivity is :

A

`JmK^(-1)`

B

`Jm^(-1)K^(-1)`

C

`WmK^(-1)`

D

`Wm^(-1)K^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
`(dH)/(dt)=(KA)/(l)DeltaT` (K = coefficient of thermal conductivity)
`thereforeK=(ldH)/(AdtDeltaT)"in unit"=(mxxJ)/(m^(3)xxtxxK)`
`becauseJ/(t)=W`
Unit of `K=Wm^(-1)K^(-1)`
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