Usually only on the right side door to give a wider view.
No, that is not allowed in the US
car
It doesn't.The reflectors in car's headlights' are concave.
convex mirror
The passenger's side mirror of a car is usually convex. This helps to provide a wider field of view and reduce blind spots.
A convex mirror curves outward, causing light rays to diverge. This type of mirror is often used in security mirrors, car side-view mirrors, and as a safety feature in public spaces to provide a wider field of view.
The mirror in this case is a convex mirror, as virtual images are formed by convex mirrors.
A convex mirror curves outward and reflects light outwards. It diverges light rays and forms virtual images that are upright, diminished in size, and located behind the mirror. Convex mirrors are commonly used in car side mirrors and security mirrors.
it is a convex mirror as it produces diverging waves
A convex mirror will always create a virtual image. It will also have a negative magnification. The passenger side mirror in every car is slightly convex. [The one with "Objects in Mirror are closer than they appear"] Also, anti-theft mirrors in convenience stores have these properties.
convex: to help the driver see areas behind and to the sides of the vehicle,which is in his/her blind spot.
Further away (smaller) than they actually are.