

MCQOPTIONS
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1. |
Of the radiant energy 350W/m² incident upon a surface 250W/m² is absorbed, 60W/m² is reflected and the remainder is transmitted through the surface. Workout the value for reflectivity for the surface material |
A. | 0.181 |
B. | 0.171 |
C. | 0.161 |
D. | 0.151 |
Answer» C. 0.161 | |