For Convex mirror image distance (v) is always positive as image is always formed on the right hand side. The focal length (f) of a concave mirror is considered negative and for convex mirror it ...

Instead, to compensate for angle and distance, the passenger-side mirror is actually convex in shape—it bulges slightly in the center compared to the edges, like a contact lens.

Ever wonder why objects in your car’s side mirror appear farther away? Learn the science behind this warning and how convex mirrors affect perception.