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1. If the mean temperature of Sun's surface 6000 K and λm of its radiation is 0.5 what is the mean temperature of earth surface for which λm is 10.0 μm, according to Wien's Displacement Law in Remote Seniror Concept ?
(A): 25 °C
(B): 27 °C
(C): 28 °C
(D): 30 °C
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