A cylinder of radius R is surrounded by a cylindrical shell of inner radius R and outer radius 2R. The thermal conductivity of the material of the inner cylinder is K1 and that of the outer cylinder is K2. Assuming no loss of heat , the effective thermal conductivity of the system for heat flowing along the length of the cylinder is :
Equivalent Thermal Conductivity in Parallel -
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Both are in parallel combination
Option 1)
Option 2)
Option 3)
Option 4)
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