Question

What kind of a change is undergone when an electric bulb glows?

Answer 1

when electric bulb glow then electrical energy is changed to heat energy
and then heat energy is converted into light energy

Answer 2

Glowing of a bulb is a physical change.When electric current is  passed through the bulb, the filament starts glowing and the glow stops as soon as we stop the current. Here, the change is temporary ,no new products are formed and there is no chemical change in the tungsten of the filament.

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