Question

Why do we prefer a convex mirror as a rear-view mirror in vehicles?​

Answer 1

Answer:

They are the best mirror for a rear mirror

Explanation:

To understand Why we use Convex mirror as rear view mirror, first need to understand Convex mirrors:

A convex mirror or diverging mirror is a curved mirror in which the reflective surface bulges towards the light source.Convex mirrors reflect light outwards, therefore they are not used to focus light. Such mirrors always form a virtual image, since the focal point (F) and the centre of curvature (2F) are both imaginary points "inside" the mirror, that cannot be reached. As a result, images formed by these mirrors cannot be projected on a screen, since the image is inside the mirror. The image is smaller than the object, but gets larger as the object approaches the mirror.

A collimated (parallel) beam of light diverges (spreads out) after reflection from a convex mirror, since the normal to the surface differs at each spot on the mirror.

The actual reason:

Convex mirrors are preferred in vehicles because they give an upright (not inverted), though diminished (smaller), image and because they provide a wider field of view as they are curved outwards.

Answer 2

Answer:

$\huge\mathbb\red{ANSWER}$$\large\red\implies\star{}$

SOLUTION:-

⇨★ Convex mirror is preferred as a rear-view mirror in cars and vehicles as it gives a wider field of view, which helps the driver to see most of the traffic behind him. Convex mirrors always form an erect, virtual, and diminished image of the objects placed in front of it.