Working Principle of a Table Lamp

A table lamp burns due to the convection current of air. The frame holding the chimney covering the flame is provided with holes. When the flame burns, while hot air escapes through the upper open end of the chimney, fresh cool air enters through the holes maintaining the supply of oxygen for the flame.

If the holes in the frame are covered, the convection current of air stops, and the flame extinguishes due to the absence of oxygen.