Convex Mirrors in vehicles

WHY CONVEX MIRRORS ARE USED
IN REAR VIEW MIRRORS IN
VEHICLES?

LEARNING OBJECTIVES:
How image forms?
Spherical Mirrors -Types
Ray Diagram of Mirrors –convex mirrors
Properties of Mirrors –convex mirrors
Uses of convex mirrors

How image forms?
• Light waves travel from their source in all directions
and in a straight line.
• If a light wave hits an object, it may be reflected, or it
may bounce off the object.

Spherical Mirrors
 Formed by a part of curved part of a hollow
glass.
 Two types-
 Convex
 Concave

• A convex mirror curves outward like the back of a
spoon.
• Convex mirrors cause a beam of light to diverge, or
spread apart as if it came from a focal point behind the
mirror.
Ray Diagram of Mirrors –
convex mirrors

Properties of Mirrors –
Convex Mirrors
•All images formed by a
convex mirror are
virtual,
right side up, and
small.
•Convex mirrors are
useful because they
make small images of
large areas.

 A virtual image is an image that appears to come
from a place that the light does not actually come from.

 Many cars, buses, and trucks use convex side mirrors
so the driver can see more of the surrounding area.

 Convex mirrors are used in rear-view mirrors in vehicles
as the images formed by convex erect, virtual, full size
diminished image of distant objects with a wider field of
view.
 Where as in plane mirrors, the image formed is not
diminished and it won’t gives us a wider view
 Concave mirrors forms inverted images, hence not suitable
for using in vehicles(Why?)

 Plain ,convex or concave mirror?

Convex Mirrors in vehicles

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Convex Mirrors in vehicles