Question

why tungsten is used in making bulb filament and how to prolong its life​

Answer 1

Answer:

I hope this answer may help you

Explanation:

Tungsten is the most preferred for incandescent lamps due to its high melting point (above 3650 K), and it can be operated at high temperature inside a bulb containing air under reduced pressure, or an inert gas in order to avoid quick oxidation of the filament.

Answer 2

Tungsten is used for making filament in electric bulbs. Because it has higher resistivity values and melting point.