A) \[\eta =0.38\]
B) \[\eta =0.88\]
C) \[W=1596J\]
D) \[W=1400J\]
Correct Answer: D
Solution :
\[\eta =1-\frac{{{T}_{2}}}{{{T}_{1}}}=1-\frac{127+273}{327+273}=\frac{3-2}{3}\] \[\eta =\frac{1}{3}\] Further \[\eta =\frac{W}{Q}\] \[\Rightarrow \] \[W=Q\eta =\frac{1000}{3}cal\] \[\Rightarrow \] \[W=\frac{1000\times 4.2}{3}J\] \[\Rightarrow \] \[W=1400\,J\]You need to login to perform this action.
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