why tungsten used to make the filament of electric bulb give any three reason
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because of its high tensile strength, high melting point and lowest vapour pressure.
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Heya ✋
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Tungsten used to make the filament of electric bulb due to following reasons : -
● It has a very high melting point.
● It glows brightly for a long time.
● It is quite stable.
● It has a long life vis - a - vis 'burn out' or possible oxidation.
● When current passes through it , it becomes 'white - hot'.
Thanks :)))
Let see your answer !!!
Tungsten used to make the filament of electric bulb due to following reasons : -
● It has a very high melting point.
● It glows brightly for a long time.
● It is quite stable.
● It has a long life vis - a - vis 'burn out' or possible oxidation.
● When current passes through it , it becomes 'white - hot'.
Thanks :)))
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