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Unformatted text preview: Craig Ogilvie Craig Ogilvie 11 Summary Lecture 33 Â§ real image sâ€™ > 0 virtual image sâ€™ < 0 Â§ converging lens f > 0 (real image of infinitely far object), Â§ diverging lens f < 0 (virtual image of infinitely far object) f s s 1 ' 1 1 = + s s ' m size object size image ion magnificat = = Craig Ogilvie Craig Ogilvie 22 Goal Â§ Develop problemsolving skills for optics problems Craig Ogilvie Craig Ogilvie 33 Question Â§ You are trying to focus the image from LCDprojector onto screen, without moving the screen, changing the focal length of the lens, or changing where the LCD is. Â§ LCDlight source: as object, lightsource is 10.0m from screen Â§ Focal length of converging lens is f=0.3m Â§ Write down your plan of how you will solve problem Â§ Share with your neighbor 1. Identify principle â€¢ move lens so that real image is located exactly at screen 2. Draw Diagram 3. Match quantities in diagram/problem to lens equation 4. Solve 5. Check for consistency between diagram, numerical solution OK, draw a diagram Craig Ogilvie...
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 Spring '07
 Johnson
 Physics, Craig Ogilvie

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