When a beam of light strikes a
rough surface it is reflected in different directions over
a wide area. Such a reflection is called Diffused or
Irregular reflection.
When a beam of light strikes a smooth surface it is reflected
in a fixed direction. Such a reflection is called specular
or regular reflection.
Light rays reflected from regular surface follow two laws
of reflection:
1.) Angle of incidence = angle of reflection
2.) The incident ray, the reflected ray and the normal at
the point of incidence lie in the same plane.
The image formed in a plane mirror is
· Virtual and upright
· Same size as the object
· Object distance = image distance
The image formed in a plane mirror is called virtual
as it has no physical existence.
The image formed in the mirror is laterally inverted.
Lateral inversion refers to the apparent left-right reversal
of the image with respect to the object.
Keywords covered are : reflection,
microscopic views, 3d planes, reflection from mirrors, regular
and irregular reflection, lateral inversion, terminology,
laws, reflection from point object & extended object,
real & virtual images.......
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