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Spherical Mirrors:
A spherical mirror is a mirror with a polished, reflecting surface that is part of a
hollow sphere of glass or plastic. One of the two curved surfaces of a spherical
mirror is coated with a thin layer of silver, followed by a coat of red lead oxide
paint. As a result, one side of the spherical mirror is opaque, while the other is a
highly polished reflecting surface. The opaque side of a mirror is always shaded in
a diagram.
Please keep in mind that the opaque, non-reflecting side is shaded blue in the
diagrams below, while the reflecting side is shaded red.
The spherical mirror is classified as follows based on the nature of its reflecting
surface:
Concave mirror
A concave mirror is a spherical mirror with its reflecting surface oriented toward
the center of the sphere of which it is a part.
Convex mirror
A convex mirror is a spherical mirror with a reflecting surface that is angled away
from the center of the sphere of which it is a part.
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