Answer
$K = 3.73 $
Work Step by Step
The coefficient of performance (COP) equation for refrigerator is
$K = \frac{Q_H}{W}, $ where $Q_H $ is the heat leaving the system and $W$ is the energy required for work done.
Taking values from the question,
$K = \frac{560J}{150J} $
$K = 3.73 $
