A black body radiates energy at the rate of 1×105 J/(sm)2 at a tempe – McqOptions

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1.	A black body radiates energy at the rate of 1×105 J/(sm)2 at a temperature of 227°C. The temperature to which it must be heated so that it radiates energy at the rate of 1×109 J/(sm)2.
A.	5000 K
B.	5000°C
C.	500 K
D.	500°C
Answer» B. 5000°C

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