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A 100W electric light bulb has diameter of (8)10^-5m.Estimate working temperature of solar surface Ts=6000K,earth sun distance d=(1.5)(100^11)m (1)1900K (2)2018K (3)2800K (4)2946K

A 100W electric light bulb has diameter of (8)10^-5m.Estimate working temperature of solar surface Ts=6000K,earth sun distance d=(1.5)(100^11)m
(1)1900K
(2)2018K
(3)2800K
(4)2946K

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