Why is air completely evacuated or replaced with inert gas inside an incandescent electric bulb?

Question

Physics · Current Electricity

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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Correct answer

To prevent the oxidation of the tungsten filament

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Answer 1

To minimize the atmospheric pressure on the glass casing

Answer 2

To prevent the oxidation of the tungsten filament

Answer 3

To keep the glass bulb cool during operation

Answer 4

To increase the intensity of emitted light

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