Q57. the heat capacity of the interior of a refrigerator is 4.2 kj/k . the minimum work that must be done to lower the internal temperature from 18° c to 17° c,

Q57. The heat capacity of the interior of a refrigerator is 4.2 kJ/K . The minimum work that must be done to lower the internal temperature from 18° C to 17° C, when the outside temperature is 27 C will be (a) 2.20 kJ (b) 0.80 kJ (c) 0.30 kJ (d) 0.14 kJ