If the door of a refrigerator is kept open, then which of the following is true ?
(1) Room is cooled
(2) Room is heated
(3) Room is either cooled or heated
(4) Room is neither cooled nor heated
(2) In a refrigerator, the heat dissipated in the atmosphere is more than that taken from the cooling chamber, therefore the room is heated if the door of a refrigerator is kept open.