Can we use a screen coated with barium platinocyanide in a cathode ray tube? If so what effects do we observe on the screen?

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Solution

Yes, we can use screen coated with barium plantiocyanide in a cathode ray tube. It is a fluroscent material and can be coated on the screen to produce fluroscence when thermions strike it. We can observe that the screen glows with bluish white glow.

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