A) 3
B) zero
C) 10
D) -3
Correct Answer: D
Solution :
From the formula of coefficient of performance of a refrigerator is given by \[9=\frac{{{T}_{2}}}{{{T}_{1}}-{{T}_{2}}}\] (Given: \[{{T}_{1}}=27{}^\circ =300K\]) or \[9=\frac{{{T}_{2}}}{300-{{T}_{2}}}\] or \[2700-9{{T}_{2}}={{T}_{2}}\] or \[10{{T}_{2}}=2700\] or \[{{T}_{2}}=270K=-\,3{}^\circ C\]You need to login to perform this action.
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