Peoples Physics Concepts

(Marvins-Underground-K-12) #1

16.7. Lens http://www.ck12.org


Geometric Optics (PhET Simulation)

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  1. Consider a converging lens with a focal length equal to three units and an object placed outside the focal point.


a.Carefullytrace three rays coming off the top of the object and form the image.
b. Measuredoanddi.
c. Use the mirror/lens equation to calculatedi.
d. Find the percent difference between your measureddiand your calculateddi.
e. Measure the magnificationMand compare it to the calculated magnification.


  1. Consider a converging lens with a focal length equal to three units, but this time with the object placed inside
    the focal point.


a.Carefullytrace three rays coming off the top of the object and form the image.
b. Measuredoanddi.
c. Use the mirror/lens equation to calculatedi.
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