Everything about Plane Mirror totally explained
A
plane mirror is a
mirror with a
planar reflective surface.For
light rays striking a plane mirror, the angle of
reflection equals the angle of incidence. Thus a
collimated beam of light doesn't spread out after reflection from a plane mirror, except for
diffraction effects.
Images
A plane mirror makes images of objects in front of it; these images appear to be behind the plane in which the mirror lies. A straight line drawn from part of an object to the corresponding part of its image makes a right angle with, and is bisected by, the surface of the plane mirror. The image formed by a plane mirror is always
virtual (meaning that the light rays don't actually come from the image), upright, and of the same size as the object!
Relation to curved mirrors
Mathematically, a plane mirror can be considered to be the
limit of either a
concave or a
convex spherical curved mirror as the radius, and thus also the
focal length, of the spherical mirror become very large.
Further Information
Get more info on 'Plane Mirror'.
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