Which gas is used in common incandescent bulbs?
A.
B.
C.
D.
Answer & Solution
Solution:
Nitrogen is used in incandescent bulbs to prevent the
tungsten filament from oxidizing at high temperatures. It is an inert and
cost-effective gas that reduces filament evaporation, prolonging the bulb's
life. Sometimes, it is mixed with argon for better performance.
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