Convex mirrors are used by dentists to see an enlarged image of our mouth
Convex mirrors are used as rear-view mirrors in auto mobiles to see the traffic coming from behind.
As it produces virtual erect and smaller image
Big convex mirrors are used as vigilance-mirrors in big shops and stores
You know they are used to prevent shop lifting in the shop
Convex mirrors are used as staircase-mirrors on the double decker buses
Convex mirrors are used as rear view mirrors in vehicles (like cars, trucks and buses) to see the traffic at the rear side (or back side).
I hope it may help you.
What may I know please ????