Which component of the mirror reflects the light?

Front side of glass

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Silver polishing

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Opaque paint at the back

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Back side of glass

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Solution

The correct option is B Silver polishing
Light enter through the outer (front) glass layer and reflects on hitting the silver polish painted at the back side of the glass.
Glass has no role in reflection. Also, the paint is meant only to prevent oxidation of the silver polishing. It has no role in reflection either.

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