A Sphere of Radius 'R1' Is Enclosed in a Sphere

question 17

Multiple Choice

A sphere of radius 'R1' is enclosed in a sphere of radius 'R² '. The view (or shape) factor for radiative heat transfer of the outer sphere with respect to the inner sphere is

• A)0
• B)R² /(R1+R² )
• C)1
• D)(R1/R² ) ²

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