Question

From which surface of a mirror-the polished surface or the silvered surface-does most of the light reflect?

Answer 1

Answer:

In order to avoid this, ordinary mirrors are made by coating a thin layer of silver metal or mercury on one side of a plane glass sheet and this silver layer is protected by applying a coat of red paint over it. Hence, the black silvered surface of a plane mirror reflects most of the light incidents on it.

Explanation:

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Answer 2

For a conventional bathroom or vanity mirror, most of the light reflects from the rear surface, which is “silvered” with a metal coating which may be actual silver (on an old mirror) or aluminum (modern mirrors). The front surface, assuming it is just polished glass, reflects only about 4% of the incoming light.