119What is the reason of the answer??
The door of a running refrigerator inside a closed room was left open.Then-
(a)The room will be cooled slightly
(b)The temperature of the room will be lowered
(c)The temperature of the room will not be affected
(d)The room will be warmed up gradually
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4 Answers
226the door of the refrigerator when left open in a well insulated room increases the temperature of the room !!
this is due to the fact that the refrigerator takes the heat away from the substance so the object cools down , but the heat which has been taken away is still there in the room, the liquid coolant in this case !!!! so the temp must be same but then again the refrigerator is in the on state so it is consuming electricity and doing some work so from 2nd law of thermod some heat is being produced so that heat increases the temperature of the room eventually
