Two thin metallic spherical shells of (r₁ r₂) are placed with their centre A material of thermal conductivity the space between the shells. The maintained at temperature 0₁ and the

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Two thin metallic spherical shells of radii r, and r₂
(r₁ < 1₂) are placed with their centres coinciding.
A material of thermal conductivity K is filled in
the space between the shells. The inner shell is
maintained at temperature 0₁ and the outer shell at
temperature 0₂(0₁ <0₂). The rate at which heat
flows radially through the material is :-
Transcribed Image Text:Two thin metallic spherical shells of radii r, and r₂ (r₁ < 1₂) are placed with their centres coinciding. A material of thermal conductivity K is filled in the space between the shells. The inner shell is maintained at temperature 0₁ and the outer shell at temperature 0₂(0₁ <0₂). The rate at which heat flows radially through the material is :-
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