Question

What if there are
no rear view mirrors attached to
the vehicle and no concave mirrors in the headlights
of the vehicle​

Answer 1

Answer:

If there are no rear mirrors then we will not be able to make out cars behind us

This can lead to accidents as the concave mirror clwhich gives us the image of cars behind us is absent

In a concave mirror the light rays diverge

So if we use concave mirror in headlights of cars then the light will spread out

If not we will be able to see for a shorter distance in front of us and this too can lead to accidents

Hope this helps