Heat flow across a hollow sphere of inner radius ‘r1’ and outer radius ‘r2’ is directly proportional to__________________?

Chemical Engineering Mcqs

Heat flow across a hollow sphere of inner radius ‘r1’ and outer radius ‘r2’ is directly proportional to__________________?

(A)  (r2 – r1)/r1. r2

(B)  r1. r2/(r2 – r1)

(C)  (r2 + r1)/r1. r2

(D)  r1. r2/(r2 + r1)

Submitted By :Ali Uppal

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