A) 10
B) 1
C) 9
D) zero
E) None of these
Correct Answer: C
Solution :
For a Camot engine functioning as refrigerator the effectiveness is the ratio of the energy delivered to the high temperature reservoir to the work required to force the engine aroual its cycle. \[\beta =\frac{{{Q}_{h}}}{W}=\frac{{{T}_{2}}}{{{T}_{1}}-{{T}_{2}}}\] Given, \[{{T}_{2}}=0+273=273\,K\] \[{{T}_{1}}=30+273=303\,K\] \[\therefore \] \[\beta =\frac{273}{303-273}\] \[=\frac{273}{30}=9\]
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