A piece of glass can be used as a mirror by coating on one of its surfaces.

wood

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silver

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paper

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plastic

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Solution

The correct option is B silver
$∙$ Glass when coated with a lustrous material reflects light and acts as a mirror.

$∙$ Materials like aluminium and silver are lustrous. These are used to coat glass to make mirrors.

$∙$ Materials like wood, paper, and plastic are non-lustrous materials.

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