The sulphide that is commonly used in coating electric fluorescent tubes is?

Question: The sulphide that is commonly used in coating electric fluorescent tubes is?

 The sulphide commonly used in coating electric fluorescent tubes is zinc sulfide (ZnS). Zinc sulfide is a phosphor material that is used to convert the ultraviolet radiation produced by the gas discharge in the tube into visible light. When the ultraviolet radiation strikes the zinc sulfide coating, it causes the material to emit visible light in a process known as fluorescence. This is how fluorescent tubes produce light.

Zinc sulfide is a common choice for coating fluorescent tubes because it has a high efficiency of converting ultraviolet radiation into visible light and has a relatively long life compared to other phosphor materials. However, there are other materials that can also be used as phosphors in fluorescent tubes, depending on the desired color and performance characteristics of the tube.

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