13. If a refrigerator's door is opened, then we get (a) Room heated (b) Room cooled (c) More amount of heat is passed out (d) No effect on room
If a refrigerator's door is kept open, then room will become hot, because then refrigerator exhaust more heat into the room than earlier. In this way, temperature of the room increases and room becomes hot. No refrigerator is efficient. Thus it exhaust more heat into the room than it extract from it.
