Most cars have a centre rear view mirror on the windshield and two side mirrors on the doors.
The rear view mirror.
because the mirror used is concave mirror.
Yes. In convex mirrors, the image is always erect and diminished, at whatever distance the object may be in front of the mirror. The convex mirror has a wide field of view and hence is used as a rear view( or driving) mirror in vehicles, to view the traffic behind.
convex mirror
A convex mirror
convex mirror provide erect small and virtual image of the object.these are used in side view mirrors of vehicles so that the driver can have a better view of traffic behind.
The outer curved part is coated with mercury as the inner would reflect light in case of concave mirror. Whereas the inner is coated as to make the outer to act as reflector in case of convex mirror. Concave mirror can give both real and virtual images for a real object depending on the location of object. But convex on the other hand can give only virtual image with a real object irrespective of the position of the object. Next, concave mirror can be used as shaving mirror. Also used to converge the parallel beam of light. Convex mirror is best used as rear view mirror in case of vehicles.
convex mirror
Concave mirror
"Convex mirrors are used to provide a wider Field_of_viewthan a flat mirror, and are often used on vehicles, especially large trucks, to minimise Blind_spot_(automobile)."http://en.wikipedia.org/wiki/Mirror
convex mirror as used by drivers in different vehicles......
convex mirror can form image of object speared over a large area . so these helps the drivers to see the traffic behind them.
a flat mirror is just a normal mirror, for getting ready in the morning, or seeing the trafic behind you.