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plain mirrors are coated with paints to protect the reflecting surface behind the glass. If the reflecting surface gets scratched a hazy and unclear image will be formed,to prevent scratching of reflecting surface it is done so

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11y ago
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5mo ago

Plain mirrors are usually coated with a thin layer of red paint on the back to prevent the formation of a second ghost image. This red coating absorbs any light that passes through the mirror, reducing the reflection of multiple images that can occur in certain lighting conditions.

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Q: Why the plain mirrors are coated with red colour?
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