Ray Optics Question #1: Concave Mirror Image Formation

[sphouxay]

Homework Statement

An object is 12 cm in front of a concave mirror with a focal length of 21 cm .

Locate the image in s'
Is the image upright or inverted?

Homework Equations

willl get back with it

The Attempt at a Solution

Im not sure where to start, this should be a simple problem

 

[Redbelly98]

There is a standard equation relating the focal length to the object and image distances. It should be in your textbook. It's the same equation that is used for a lens .

Hope that helps get you started.