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Question
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
Options:
A .  0.181
B .  0.171
C .  0.161
D .  0.151
Answer: Option B
Answer: (b).0.171

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