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Print :. 8. Demo:. Warmup. Draw a fully-labeled Ray Diagram to show the image. Then fill in the blanks below: Type of mirror:. S A L T. Agenda. See Snowflake image Set quiz date Magnification worksheet. How do you find the focus?. f = focal length d i = image distance

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  1. Print: 8 Demo:

  2. Warmup • Draw a fully-labeled Ray Diagram to show the image. Then fill in the blanks below: Type of mirror: S A L T

  3. Agenda • See Snowflake image • Set quiz date • Magnification worksheet

  4. How do you find the focus? f = focal length di = image distance do = object distance

  5. Examples • A convex mirror has an image distance of 32 cm and an object distance of 18 cm. Find the focal length. • A concave mirror has a focal length of 15cm. An object with a height of 4 cm is placed 45.0 cm in front of the mirror. Calculate the image distance.

  6. Example • Find di and hi for the configuration below. • di = • hi =

  7. Example • Find di and hi for the configuration below. • di = • hi =

  8. Magnification • The ratio of the size of an image to the size of an object. m = magnification di = image distance hi = image height do = object distance ho = object height

  9. Examples • A photo needs to be enlarged 5 x larger. It is 18 inches tall, • What is the magnification? • How tall will it be when it is finished? • A microscope produces an image that is 1.00x10-4 m high from an object that is 4.00 x 10-7 m high. What is the magnification of the microscope?

  10. Equations and Convex Mirrors • Equations are the same for concave mirrors • Since the focal point is behind the mirror, the focal length, f, for a convex mirror is negative

  11. Convex Example • A convex surveillance mirror in a convenience store has a focal length of -0.40 m. A customer, who is 1.7 m tall, is standing 4.5 m in front of the mirror. Calculate the image distance.

  12. Convex Example • A convex surveillance mirror in a convenience store has a focal length of -0.40 m. A customer, who is 1.7 m tall, is standing 4.5 m in front of the mirror. Calculate the image height.

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