A) \[2.4\times {{10}^{4}}\]cal
B) \[6\times {{10}^{4}}\] cal
C) \[1.2\times {{10}^{4}}\] cal
D) \[4.8\times {{10}^{4}}\] cal
Correct Answer: C
Solution :
\[\eta =\frac{{{T}_{1}}-{{T}_{2}}}{{{T}_{1}}}=\frac{W}{Q}\]Þ \[W=\frac{Q({{T}_{1}}-{{T}_{2}})}{{{T}_{1}}}\] \[=\frac{6\times {{10}^{4}}\left[ (227+273)-(273+127) \right]}{(227+273)}\] \[=\frac{6\times {{10}^{4}}\times 100}{500}\]\[=1.2\times {{10}^{4}}cal\]You need to login to perform this action.
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