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Equations with Lenses SNC2D.

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Presentation on theme: "Equations with Lenses SNC2D."— Presentation transcript:

1 Equations with Lenses SNC2D

2 The Thin Lens Equation For converging or diverging lenses:

3 Example: Converging Lens
A 4.0-cm tall light bulb is placed 18 cm from a converging lens having a focal length of 12 cm. Determine the image distance.

4 Example: Converging Lens
A 4.0-cm tall light bulb is placed 18 cm from a converging lens having a focal length of 12 cm. Determine the image distance.

5 Example: Converging Lens
A 4.0-cm tall light bulb is placed 18 cm from a converging lens having a focal length of 12 cm. Determine the image distance.

6 Example: Converging Lens
A 4.0-cm tall light bulb is placed 18 cm from a converging lens having a focal length of 12 cm. Determine the image distance.

7 Magnification Similarly, the magnification of an object is the ratio of the image height, hi, to the object height, ho: Or the ratio of the image distance, di, to the object distance, do:

8 Another Example Determine the image height of a 5.0-cm object placed 20.0 cm from a double convex lens with a focal length of 15 cm.

9 Another Example Determine the image height of a 5.0-cm object placed 20.0 cm from a double convex lens with a focal length of 15 cm. First find the image distance

10 Another Example Determine the image height of a 5.0-cm object placed 20.0 cm from a double convex lens with a focal length of 15 cm.

11 Another Example Determine the image height of a 5.0-cm object placed 20.0 cm from a double convex lens with a focal length of 15 cm.

12 Another Example Determine the image height of a 5.0-cm object placed 20.0 cm from a double convex lens with a focal length of 15 cm.

13 Another Example Determine the image height of a 5.0-cm object placed 20.0 cm from a double convex lens with a focal length of 15 cm.

14 Another Example Determine the image height of a 5.0-cm object placed 20.0 cm from a double convex lens with a focal length of 15 cm.

15 Another Example Determine the image height of a 5.0-cm object placed 20.0 cm from a double convex lens with a focal length of 15 cm.

16 More Practice p. 455 Practice Problems #1-3


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