A) 304 W
B) 320 W
C) 240 W
D) 120 W
Correct Answer: B
Solution :
\[P\propto ({{T}^{4}}-{{T}_{0}}^{4})\] \[\frac{{{P}_{2}}}{{{P}_{1}}}=\frac{{{(1500)}^{4}}-{{(500)}^{4}}}{{{(1000)}^{4}}-{{(500)}^{4}}}=\frac{{{500}^{4}}({{3}^{4}}-1)}{{{500}^{4}}({{2}^{4}}-1)}\] \[\frac{{{P}_{2}}}{60}=\frac{80}{15}\] \[\Rightarrow \] \[{{P}_{2}}=320\,W\]You need to login to perform this action.
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