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Understanding Images Formed by Concave Mirrors

This lesson focuses on the properties of images produced by concave mirrors, specifically at the center of curvature. Key characteristics include the nature of the image (real or virtual), its orientation (inverted or upright), and its size (magnified or reduced). We will delve into example problems from the homework assignments on page 469 and page 472, facilitating hands-on learning through memory recall and illustration. Students will compare answers after trading papers, reinforcing their understanding of image distances and heights.

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Understanding Images Formed by Concave Mirrors

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  1. Journal #85 4/28/11 DO NOT USE YOUR NOTES. EITHER USE YOUR MEMORY OR DRAW A PICTURE. Describe the image of an object at the center of curvature of a concave mirror. You should be able to tell me three things about this object.

  2. Ch. 17 Homework Check Take out your homework from pg. 469, pg. 472, and the worksheet. Take out a blank sheet of paper and a pencil and number your page 1 to 10.

  3. Homework Check pg. 469 1) In problem #13, give the image distance. 2) In problem #14, give the image distance. 3) In problem #15, give the height of the image. 4) In problem #16, give the object distance.

  4. Homework Check pg. 472 5) In problem #18, give the height of the image. 6) In problem #20, give the focal length. 7) In problem #20, give the height of the image.

  5. 8

  6. 10 9

  7. Trade Papers • Trade papers with someone at a DIFFERENT table than yourself • Right your name on the bottom of their paper • Only marked WRONG answers • Answers with no unit or the wrong unit are ½ wrong

  8. Homework Check Answers 1. 28.8 cm 6. -30.0 cm 2. 13.3 cm 7. 4.4 cm 3. -1.9 cm 8. B 4. 26.7 cm 9. Abe, Bev, Cis 5. 1.1 cm 10. Abe, Han Each answer is worth 10 points, put their grade out of 100 at the top of the page and return the page to them.

  9. Pg. 469 (#13-16) 13. di = 28.8 cm 14. di = 13.3 cm ; hi = -2.0 cm 15. hi = -1.9 cm 16. do= 26.7 cm ; ho= 5.0 cm

  10. Pg. 472 (#17-21) 17. di = -8.57 cm 18. di = -10.7 cm ; hi = 1.1 cm 19. f = -96 cm 20. di = -12.7 cm ; hi = 4.4 cm 21. f = -0.60 m

  11. Eva - Han Abe - Don Don - Han Abe - Cis Cis - Han Abe , Bev Bev - Guy Abe , Han Abe - Flo Guy , Han Abe - Eva Flo - Han Abe - Don Eva - Han Abe - Cis Don - Han

  12. A B C D E F G H Eva - Han Abe - Don Don - Han Abe - Cis Cis - Han Abe , Bev Bev - Guy Abe , Han Abe - Flo Guy , Han Abe - Eva Flo - Han Abe - Don Eva - Han Abe - Cis Don - Han

  13. Everyone Else Eva Eva , Flo Everyone Else Cis, Don, Flo, Eva Abe, Bev Cis, Don, Eva Abe, Bev, Flo Flo Abe, Bev, Cis, Don, Eva Bev, Cis Abe, Don, Eva, Flo

  14. No

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