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real and upright image
A concave mirror.
Convex mirror
A plane (flat) mirror reflects an image which is the same size and shape, and colour as the object in front of the mirror. A concave mirror can produce a magnified image. If the image is in front of the mirror it is a real image; if behind it is a virtual (non-real) image. A real image can be cast upon a white the best) surface
virtual image ( not on screen, brain interpreting)
An image does not produce an image. However, a concave mirror, specifically one witha parabolic figure, forms an image in its focal plane of an infinitely distant object.
The light reflecting off of it in your line of site
An erect but virtual image of same size but with lateral inversion
Light travels around the Earth 7 times per second. This light bounces between your eyes and the mirror in a bright place to produce an image. The shinier and undamaged the mirror is and the more light there is, the clearer the image will be. That's why it's harder to see an image in a dim room, or on a cheap/scratched mirror.
A concave mirror cause light rays to converge at the focus
Plane and convex mirrors produce only virtual images.
When the object lies within its focal length then no real image can be produced