2.  We need to understand how they are constructed  How light travels from the star to our eyes  Understand how lenses are combined with other lenses  Understand how lenses are combined with mirrors  Use refraction and reflection

3. mirror F C object F = focal point C = center of curvature

4. mirror F C object Any incident ray traveling parallel to the principal axis on the way to the mirror will pass through the focal point upon reflection.the principal axisfocal point

5. mirror F C object Any incident ray passing through the focal point on the way to the mirror will travel parallel to the principal axis upon reflection.focal pointthe principal axis Imag e

6.  Plane mirrors are always virtual  Curved depend on position of object

7.  Real images are always formed on the same side of the mirror as the object.  REAL, the image of the object could be projected upon a sheet of paper.  Virtual form on the other side of the mirror  Virtual cannot be projected

8.  We need to find ◦ L = location ◦ O – orientation (inverted or upright) ◦ S = size (magnified, reduced, same) ◦ Type (real or virtual

10. This image is formed when you put the object AT C It produces a REAL IMAGE This image is also EQUAL SIZE and INVERTED

11. This image is formed when you put the object in front of F It produces a Virtual IMAGE This image is also Larger SIZE and Upright

12. This image is formed when you put the between F AND C It produces a REAL IMAGE This image is also Larger SIZE and INVERTED

13. When the object is located at the focal point, no image is formed. light rays from the same point on the object will reflect off the mirror and neither converge nor diverge. After reflecting, the light rays are traveling parallel to each other and do not result in the formation of an image.

14. Can you see me?

16.  We need to find ◦ L = location ◦ O – orientation (inverted or upright) ◦ S = size (magnified, reduced, same) ◦ Type (real or virtual

17. L IN FRONT OF MIRROR OINVERTED SSMALLER TREAL

18. L IN FRONT OF MIRROR at the image OINVERTED SSAME SIZE TREAL

19. L IN FRONT OF MIRROR BEHIND OBJECT OINVERTED SLARGER TREAL