A standard, incandescent light bulb emits light when a filament is heated. How does a fluorescent bulb work?
- Light is emitted when a mercury filament reacts with great pressure inside a glass bulb.
- Light is emitted when argon gas reacts with an electrical current.
- Light is emitted when solar energy reacts with a silk thread.
- Light is emitted when mercury vapor is heated.
Answer
The correct answer is D) Light is emitted when mercury vapor is heated..
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