Physics Help Forum locating image positions

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 Jul 21st 2010, 05:04 PM #1 Junior Member   Join Date: Jun 2010 Posts: 11 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.
Aug 1st 2010, 06:47 AM   #2
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 Originally Posted by clockworks204 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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