A) 1:8
B) 1:16
C) 1:128
D) 1:256
Correct Answer: D
Solution :
According to Stefans law \[E\propto {{T}^{4}}\] Hence, \[\frac{{{E}_{1}}}{{{E}_{2}}}={{\left( \frac{{{T}_{1}}}{{{T}_{2}}} \right)}^{4}}\] ?..(i) Here, \[{{T}_{1}}={{27}^{o}}C=300K\] \[{{T}_{2}}={{927}^{o}}C=1200K\] From equation (i) we get or \[\frac{{{E}_{1}}}{{{E}_{2}}}={{\left( \frac{300}{1200} \right)}^{4}}=\frac{1}{256}=1:256\]
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