2. Is it a good idea to use a large flat (plane) mirror as a security...

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Answer 1

Answer #1

Plane mirror is not used as a security mirror because:

Plane mirror has a smaller field of view compared to other mirrors. That is, only a small region or section could be kept under surveillance.
It shows objects with their original size. Therefore, a limited number of persons or objects can only be shown at a time.
Therefore, for a larger area to be seen through the mirror, the size of the mirror has to be considerably large enough; which makes it costly and difficult to install.

Usually, a convex mirror is used as a security mirror.

Answer 2

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