Question

why do we prefer a convex as a rear view mirror in a vehicle

Answer 1

Convex mirrors give a virtual, erect, and diminished image of the objects placed in front of them. They are preferred as a rear-view mirror in vehicles because they give a wider field of view, which allows the driver to see most of the traffic behind him.

Answer 2

We prefer a convex as a rear view mirror in a vehicle bcz it has a much wider field of view as compared to plane mirror or a concave mirror and always produces an erect image.

Hope this helps you....:)