A cylinder of radius R, made of a material of thermal conductivity k 1 , is surrounded by a cylindrical shell of inner radius R and outer radius 2R. The shell is made of a material of thermal conductivity k 2 . The two ends of the combined system are maintained at two different temperatures. There is no loss of heat across the cylindrical surface and the system is in steady state. The effective thermal conductivity of the system is -
A
k 1 + k 2
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Parallel combination of cross - section area 
and 
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
The production of e.m.f. by maintaining a difference of temperature between the two junctions of tw…
When a current passes through the junction of two different metals, evolution or absorption of heat…
When a current passes through a wire whose different parts are maintained at different temperatures…
The thermocouple is based on the principle of
For a thermocouple, the neutral temperature is and the temperature of its cold junction is . If t…
Thermocouple is a device for the measurement of