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If layer thickness L(2) is 1.4 cm, then ...

If layer thickness `L_(2)` is `1.4 cm`, then its thermal conductivity `K_(2)` will have value `("in " W//mK)`

A

`2xx10^(-2)`

B

`2xx10^(-3)`

C

`4xx10^(-2)`

D

`4xx10^(-3)`

Text Solution

Verified by Experts

` (triangleQ)/(trianglet)|_("layer 1")` = `(triangleQ)/(trianglet)|_("layer 2")`
`implies(0.06xxAxx5)/(1.5xx10^(-2))=(K_(2)xxAxx14)/(1.4xx10^(-2))impliesK_(2)=0.02W//mK`
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