Published by:
CGP EDU Academic Team
Published on: August 14, 2026
As per the given figure, two plates 
and 
of thermal conductivity 
and 
are joined together to form a compound plate. The thickness of plates are 
and 
respectively and the area of cross-section is 
for each plate. The equivalent thermal conductivity of the compound plate is 
, then the value of 
will be
Text Solution
Verified by ExpertsThe correct answer is:
21
(21)
: Thermal resistivity
Now, 
of this series combination
where 
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