Question

An electric bulb is not filled with normal atmospheric air but is filled with argon or nitrogen.

Answer 1

Hey mate..

in bulb filament known as tungsten is used and nitrogen is filled in electric bulb to increase the life of this tungsten wire.

Hope this helps you..

Please mark as brainliest

Answer 2

This is done to increase the life period of tungsten otherwise tungsten would undergo oxidation and would become thinner and thinner day by day at last this will break that leads to the fuse of bulb