A cylinder of radius R is surrounded by a cylindrical of inner radius R and outer radius 2R. The thermal conductivity of the material of the inner cylinder is K 1 and that of the outer cylinder is K 2 . Assuming no loss of heat, the effective thermal conductivity of the system for heart flowing along the length of the cylinder is:
A
K 1 + K 2
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
thermal resistance R = 
R = 
R 2 = 
K eq = 
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