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The gas usually filled in the electric bulb is
  • a)
    nitrogen
  • b)
    hydrogen
  • c)
    carbon dioxide
  • d)
    oxygen
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The gas usually filled in the electric bulb isa)nitrogenb)hydrogenc)ca...
There is no vacuum in the electric bulb. On the contrary, argon gas or argon gas mixed with a little nitrogen is filled in the bulb under some pressure. Years ago there was a practice to leave vacuum inside the bulb so as to prevent the burning of tungsten filament in the temperature of 2000deg Celsius inside the bulb.
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The gas usually filled in the electric bulb isa)nitrogenb)hydrogenc)carbon dioxided)oxygenCorrect answer is option 'A'. Can you explain this answer?
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