The earth receives its surface radiation from the sun at the rate of 1 – McqOptions

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1.	The earth receives its surface radiation from the sun at the rate of 1400 W/m2. The distance of the centre of the sun from the surface of the earth is 1.5 ´ 1011 m and the radius of the sun is 7.0 ´ 108 m. Treating sun as a black body, it follows from the above data that its surface temperature is?
A.	5801 K
B.	106 K
C.	50.1 K
D.	2801C
Answer» B. 106 K

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