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Ch. 15 Lenses and Refraction

pgs. 562 – 586 Chapter summary pg. 586. Ch. 15 Lenses and Refraction. Lens A transparent object that refracts light rays Images are formed through the refraction of light Two types: Convex lens Concave lens Converging lens Diverging lens.

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Ch. 15 Lenses and Refraction

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  1. pgs. 562 – 586 Chapter summary pg. 586 Ch. 15 Lenses and Refraction

  2. Lens A transparent object that refracts light rays Images are formed through the refraction of light Two types: Convex lens Concave lens Converging lens Diverging lens

  3. Focal point for a convex lens is the image distance for an infinite object distance • Lenses have a focal point on each side of the lens

  4. Convex Lens Images

  5. Convex Lens Images

  6. Convex Lens Images

  7. Convex Lens Images

  8. Convex Lens Images

  9. Convex Lens Images

  10. A Simple Magnifier enables you to examine small objects by producing an enlarged image • It increases the angular size of an object • Angular size increases when the object moves closer • Angular size decreases when the object moves farther away

  11. Concave Lens Image • Diverging lenses only produce one kind of image

  12. Positive magnification = image is upright and virtual • Negative magnification = image is real and inverted M< 1, image is smaller M = 1, image is the same size M > 1, image is larger

  13. An object is placed 30.0 cm in front of a converging lens with a focal length of 10.0 cm. Find the image distance and the magnification. Describe the image.

  14. An object is placed 12.5 cm in front of a diverging lens with a focal length of 10.0 cm. Find the image distance and magnification. Describe the image.

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