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Old Jul 21st 2010, 05:04 PM   #1
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locating image positions

The radius of a convex spherical mirror is 20cm. A sugar cube 1.5cm high is located at distances of 20cm, 12cm, and 6cm in front of the mirror. Locate the image position for each of these object distances.

I have tried to use the formula i= fo/o-f, but I don't really understand where the 1.5 cm high comes in play.
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Old Aug 1st 2010, 06:47 AM   #2
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Originally Posted by clockworks204 View Post
The radius of a convex spherical mirror is 20cm. A sugar cube 1.5cm high is located at distances of 20cm, 12cm, and 6cm in front of the mirror. Locate the image position for each of these object distances.

I have tried to use the formula i= fo/o-f, but I don't really understand where the 1.5 cm high comes in play.
It doesn't. Just ignore it.
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