# Unit 13 Extra Credit

Either print this page and complete or (better yet) neatly show your answers on a separate page of paper. All answers must be expressed as complete sentences and/or all work shown to receive credit

1. Fill in the following table for a concave mirror. The symbol f stands for focal length.

 Object location Image location (relative to vertex, F and C) Image Height (<, =, > ho) Image Type (real or virtual) Image Orientation (upright or inverted) 4*f 3*f 2*f 1.5*f f 0.5*f

2. What type of mirror produces a reduced, virtual image and under what conditions does the mirror produce such an image? Explain fully.

3. What type of mirror produces a magnified, virtual image and under what conditions does the mirror produce such an image? Explain fully.

4. What type of mirror produces a reduced, real image and under what conditions does the mirror produce such an image? Explain fully.

5. Determine the magnification and height of an image formed from a 3.2-cm tall object if placed 21.8 m from a concave mirror with a focal length of 14.5 cm. PSYW

6. Determine the magnification and height of an image formed from a 3.2-cm tall object if placed 21.8 m from a convex mirror with a focal length of -14.5 cm. PSYW

7. Construct a ray diagram for questions #5. Draw a concave mirror, place the object at the appropriate location relative to F and C, and draw rays to locate the approximate location, size and orientation of the image.

8. Construct a ray diagram for questions #6. Draw a convex mirror, place the object at the appropriate location relative to F and C, and draw rays to locate the approximate location, size and orientation of the image.

Resources for physics students are available through links on the GBS Physics Home Page. Such resources include the Multimedia Physics Studios (a collection of animations and movies which illustrate key physics concepts) and The Physics Classroom (an online tutorial written in an easy-to-understand language).