00:01
To figure out the magnification and focal length of a flat mirror, let's consider some properties.
00:05
So the image formed by a flat mirror has the following properties.
00:08
One, the image is as far behind the mirror as the object is in front of the mirror.
00:12
So if the object is two feet in front of the mirror, it appears as though the image of that object is two feet behind the mirror.
00:18
The image is unmaugified, virtual, and upright.
00:21
So by the definition of a flat mirror, the image is unmagnified, meaning the magnification, m is equal to one.
00:27
It doesn't increase or decrease...