Science · Optics
How is white light produced in a traditional fluorescent tube light?
- 1By passing an electrical current through pure water filled inside
- 2By filling the tube with highly pressurized inert gas alone
- 3By heating the filament to emit electrons that excite gas molecules✓
- 4By cooling down the metallic filament
Correct answer
By heating the filament to emit electrons that excite gas molecules
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