When are the focal length and image distance the same?

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When are the focal length and image distance the same?

Under what conditions are the focal length and image distance the same?

2007-03-22 05:09:05 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics

3 answers

This is true when the object is placed at the focal length 'F' on one side of the lens - in a concave lens, the image will appear at the corresponding focal length 'F' on the other side of the lens.

2007-03-22 05:26:38 · answer #1 · answered by Doctor Q 6 · 0⤊ 0⤋

In the condition when the image is formed on the focus either virtual or real.

2007-03-22 05:15:16 · answer #2 · answered by Anonymous · 0⤊ 0⤋

http://hyperphysics.phy-astr.gsu.edu/hbase/geoopt/imgpri.html

2007-03-22 05:12:27 · answer #3 · answered by Anonymous · 0⤊ 0⤋