The side-view mirror of an automobile has a radius of curvature of 13.0 cm. The mirror produces a virtual image one-third the size of the object. How far is the object from the mirror?

Answer 1

F = - R/2 = - 6.5 cm; 1/F = 1/d -1/f; f = d/3; - 1/6.5 = 1/d - 3/d;

-1/6.5 = -2/d; d = 6.5·2 = 13 cm