If a virtual image is formed 10.0 cm along the principal axis from a convex mirror of focal length -15.0 cm,how far is the object from the mirror?

Question

Quizplus · Accepted Answer

Using the thin-lens equation, 1/f = 1/do + 1/di, where f is the focal length, do is the object distance, and di is the image distance, we have:1/-15.0 cm = 1/do + 1/10.0 cm1/do = 1/-15.0 cm - 1/10.0 cm1/do = -1/30.0 cmdo = -30.0 cmThe negative sign indicates that the object is virtual, which means it is on the same side of the mirror as the incident light.

If a Virtual Image Is Formed 10