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January 31, 2015

January 31, 2015

Posted by **shelly** on Monday, June 9, 2008 at 10:50pm.

- physics -
**drwls**, Tuesday, June 10, 2008 at 12:44am1. For your first question, use the lens equation

1/do + 1/di = 1/f, where f is the focal length and do is the object distance, 8 cm.

2. For your second question, replace f = 6 cm with f = -6 cm, keep do = 8 cm and solve for di. The magnification is the absolute value of di/do

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