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1. |
For infinite parallel planes having emis-sivities ε₁ & ε₂, the interchange factor for radiation from surface 1 to surface 2 is given by$ |
A. | (ε₁ + ε₂)/ε₁.ε₂ |
B. | Ε₁.ε₂/(ε₁ + ε₂ - ε₁.ε₂) |
C. | Ε₁.ε₂ |
D. | Ε₁ + ε₂ |
Answer» C. ≈í√Ø‚Äö√á√Ö.≈í¬µ‚Äö√á√á | |