A) 240 K
B) 250 K
C) 230 K
D) 260 K
Correct Answer: B
Solution :
[b] Here, Coefficient of performance \[(\beta )=5\] \[{{T}_{1}}=27{}^\circ \text{C=}\left( 27+273 \right)K=300K\] \[\text{As, }\beta =\frac{{{T}_{2}}}{{{T}_{1}}-{{T}_{2}}}\Rightarrow 5=\frac{{{T}_{2}}}{300-{{T}_{2}}}\]\[\text{or }1500-5{{T}_{2}}={{T}_{2}}\text{ or }6{{T}_{2}}=1500\] \[\therefore {{T}_{2}}=\frac{1500}{6}=250K\]You need to login to perform this action.
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