Physics

Problem

A car’s side-view mirror is a convex spherical mirror. When a traffic sign is

20\,\text{cm}

in front of the mirror, its virtual image appears

8\,\text{cm}

behind the mirror. What is the mirror’s radius of curvature? a)

+26.7\,\text{cm}

-13.3\,\text{cm}

-26.7\,\text{cm}

+11.4\,\text{cm}