A) \[4.2\times {{10}^{6}}J\]
B) \[8.4\times {{10}^{6}}J\]
C) \[16.8\times {{10}^{6}}J\]
D) Zero
Correct Answer: B
Solution :
\[\eta =1-\frac{{{T}_{2}}}{{{T}_{1}}}=\frac{W}{Q}\]Þ\[W=\left( 1-\frac{{{T}_{1}}}{{{T}_{2}}} \right)\ Q=\left\{ 1-\frac{(273+27)}{(273+627)} \right\}\] Þ\[W=\left( 1-\frac{300}{900} \right)\times 3\times {{10}^{6}}\]\[=2\times {{10}^{6}}\times 4.2\ J=8.4\times {{10}^{6}}J\]You need to login to perform this action.
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