1.

A black body radiates 20 W at temperature \[{{227}^{o}}C\]. If temperature of the black body is changed to \[{{727}^{o}}C\] then its radiating power will be  [CBSE PMT 2002; DCE 1999, 03; AIIMS 2003]

A.            120W                                       
B.            240 W 
C.            320 W                                      
D.            360 W
Answer» D.            360 W


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