Question

what happend if the interior of the bulb is not evacuated?

Answer 1

Answer:

The interior of the bulb is evacuated to prevent the oxidation of filament. When the tungsten comes in contact with the air in the heated condition then it undergoes oxidation.

Explanation:

Answer 2

Answer:

hey mate the interior of the bulb if not evacuated may leave oxygen which then becomes the cause of fire reacting to tungsten or whatever the coil is made of    

Explanation:

bulb generally catches fire