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CBSE Class 10 Answered

although argon and neon are inert gases.... what effect is on them when elcrtic current flows through the filament in a bulb?
Asked by | 27 Mar, 2012, 08:39: AM
answered-by-expert Expert Answer
An inert gas is used to fill the bulb (instead of just pumping out almost all the air to leave a near-vacuum) because the action of filling the bulb with an inert gas can be used to flush away ALL of the air. In addition the inert gas has the very useful physical property of helping to conduct heat from the glowing filament to the glass bulb. This allows the whole surface area of the glass bulb to radiate heat into the surrounding air.
Answered by | 27 Mar, 2012, 03:17: PM

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