If the coefficient of performance of a refrigerator is 5 and operates at the room temperature (27^@C), find the temperature inside the refrigerator.

If the coefficient of performance of a refrigerator is 5 and operates

1.	If the coefficient of performance of a refrigerator is 5 and operates at the room temperature (27^@C), find the temperature inside the refrigerator.
Answer» SOLUTION :Coefficient of performance, `beta=5` `T_1`=27+273=300 K `T_2`=? Coefficient of performance , `beta=T_2/(T_1-T_2)` `THEREFORE 5=T_2/(300-T_2)` `therefore 1500-5T_2=T_2` `therefore 1500=6T_2` `therefore T_2=1500/6`=250 K `therefore t_2`=250-273 =`-23^@`C