Calculate the coefficient of performance of an ideal refrigerator working between `-13 ^(@)C and 27^(@)C` ?

Explanation

To calculate the coefficient of performance (COP) of an ideal refrigerator working between temperatures of -13°C and 27°C, we can follow these steps:

### Step 1: Convert the temperatures from Celsius to Kelvin
- The temperature of the cold reservoir (T2) is -13°C. To convert it to Kelvin:
\[ T2 = -13 + 273 = 260 \text{ K} \]
- The temperature of the hot reservoir (T1) is 27°C. To convert it to Kelvin:
...