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Lens Optics
BlackBoard Notes

• Converging (positive) lens (object at ∞):

• Diverging (negative) lens:

• Converging lens, close object (real image):

• Converging lens, object closer than focal point (virtual image):

• Thin lens equation:

• Note: DO NOT place the 800 series lens back in the box. Use it for part II, and leave it with the optical bench!

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©	St. Lawrence University	Department of Physics

Revised: 24 Apr 2003

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