Answer to Question #152400 in Physics for Rochelle

Question

A convex mirror has a focal length of -27 cm. What is the position of the image when the object is placed 9 cm in front of the mirror?

Answer 1

$$\frac{1}{v}=\frac{1}{f}-\frac{1}{u}\\\frac{1}{v}=\frac{1}{-27}-\frac{1}{9}\\v=-6.75\ cm$$