Interchange factor for infinitely long concentric cylinders is given b – McqOptions

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1.	Interchange factor for infinitely long concentric cylinders is given by
A.	1/ [A₁/A₂ (1/E₂ – 1)].
B.	[1/E₁ + A₁/A₂ (1/E₂ – 1)].
C.	2/ [1/E₁ + A₁/A₂ (1/E₂ – 1)].
D.	1/ [1/E₁ + A₁/A₂ (1/E₂ – 1)].
Answer» E.

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