Determine coefficient of performance of given temperature limit.
$T_{1}=27^{\circ} C$ [outside fridge]
$T_{2}=-23^{\circ} C$ [inside fridge]
AIIMS 2019, Easy
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The coefficient of performance can be calculated as,
$COP =\frac{Q_{1}}{Q_{1}+Q_{2}}$
$=\frac{T_{2}}{T_{1}-T_{2}}$
$=\frac{250}{300-250}$
$=5$
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