For f 10 cm, use the lens formula (see Challenge 7) to computethe image distance, p, for

Chapter 9, Problem Challenges 8

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For f 10 cm, use the lens formula (see Challenge 7) to computethe image distance, p, for the object distances, s, given in the accom-panying table. A few values of p have already been included so youcan check your work. Make a graph of p versus s using your results.What does the sign of p signify? For what values of s does p changethe most? What happens to p as s gets larger and larger? Can yourelate your conclusions to the operation of a simple camera or youreye? (Note: If you are familiar with the use of PC-based spreadsheetprograms, the calculations required in this exercise are particularlyeasy to complete. Even the plot may be done using the graphicscapabilities supported by most such programs.)s p sp(cm) (cm) (cm) (cm)2.0 25.04.0 6.67 50.0 12.508.0 1009.999 200 10.5312.0 50014.0 35.00 100018.0 10,00020.01f 1s1p

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