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The temperature of the interface between...

The temperature of the interface between layer `2 and 3` is:

A

`11^(@)C`

B

`8^(@)C`

C

`7.2^(@)C`

D

`5.4^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
A
`(Delta Q)/(DeltaT)|_("layer" 2)` = `(Delta Q)/(Delta t)|_("layer" 4)`
`rArr (0.06xxAxx5)/(1.5xx10^(-2)) = (0.04xxAxxDelta T)/(2.8xx10^(-2))`
`rArr Delta T = 14^(@)C`
`T_(3) = (3+14)^(@)C = 11^(@)C`.
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