Ray Diagrams For Lenses Video Lessons

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Problem: A 1.0-cm-tall object is 60 cm in front of a diverging lens that has a -30 cm focal length. Use ray tracing to find the position and height of the image. To do this accurately, use a ruler or paper with a grid.a. Determine the image distance and image height by making measurements on your diagram.b. Calculate the image position and height. Compare with your ray-tracing answers in part a.

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Lens equation:
1so+1si=1f

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Problem Details

A 1.0-cm-tall object is 60 cm in front of a diverging lens that has a -30 cm focal length. 

Use ray tracing to find the position and height of the image. To do this accurately, use a ruler or paper with a grid.

a. Determine the image distance and image height by making measurements on your diagram.

b. Calculate the image position and height. Compare with your ray-tracing answers in part a.

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