Which kind of mirror is used in the headlights of a car ? Why is it used for this purpose ?

What kind of mirror is used in the headlight of a car and why?

The mirror used for the head light of a car is

What is the mirror used in car head light ?

Concave mirror is used in headlights of vehicles, because it

Out of plane mirror, convex mirror and concave mirror : (a) Which mirror is used as a reflector in the headlights of a car ? (b) which mirror is used as a rear-view mirror in a car ?