Question

give reason why head lights of car are convex​

Answer 1

Explanation:

Convex mirrors are commonly used as rear-view (wing) mirrors in vehicles because they give an erect, virtual, full size diminished image of distant objects with a wider field of view. Thus, convex mirrors enable the driver to view much larger area than would be possible with a plane mirror.

Answer 2

The headlights of a car use concave lens, rather than convex (in most cases)

Explanation:

A concave lens diverges(spread out) the light passing through it while, a convex lens conveges(meet together) the rays of light. So concave lenses are used in headlights because the lens will spread out the rays of light pass through it. It helps to see farther and drive easily at night.

Hope it helped