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1. |
The sun emits light having maximum intensity at a wavelength 468nm. Assume emissivity of sun is 1. Calculate its surface temperature. σ= 5.67*10-8W/m2K4. |
A. | 6800K |
B. | 3400K |
C. | 6196K |
D. | 7200K |
Answer» D. 7200K | |