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Consider a compound slab consisting of t...

Consider a compound slab consisting of two different material having equal thickness and thermal conductivities `K` and `2K` respectively. The equivalent thermal conductivity of the slab is

A

2/6 K

B

`sqrt2K`

C

3K

D

4/3 K

Text Solution

Verified by Experts

The correct Answer is:
D

`(2l)/(K_(eq)(A))=l/(2KA)+l/(KA)`
(Series connection R=`R_1+R_2`) `rArr K_"eq"=4/3K`
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