A cylinderof radius Rmadeof materialof thermal conductivityK_(1) is surrondeb bycylindricalshellof innerradius R andouterradius 2Rmade ofmaterialof thermal conductivityK_(2) .The two ends of combinedsystemare maintainedat twodifferent temperatures. There is no lossof heatacross the cylindrical surfaceand thesystemis in steadystate. Findthe effetivethermalconductivityof the system .

A cylinderof radius Rmadeof materialof thermal conductivityK_(1) is su

1.	A cylinderof radius Rmadeof materialof thermal conductivityK_(1) is surrondeb bycylindricalshellof innerradius R andouterradius 2Rmade ofmaterialof thermal conductivityK_(2) .The two ends of combinedsystemare maintainedat twodifferent temperatures. There is no lossof heatacross the cylindrical surfaceand thesystemis in steadystate. Findthe effetivethermalconductivityof the system .
Answer» SOLUTION :`(K_(1) + 3K_(2))/(4)`