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April 18, 2015

April 18, 2015

Posted by **Tony** on Saturday, February 16, 2013 at 12:22am.

When the distance between the hole and floor is h 1 =20 cm , the image's length is l 1 =20 cm ; when the distance between the hole and floor is h 2 =33.333 cm , the image's length is l 2 =36 cm . What is the length L of the ceiling lamp in meters?

- Physics -
**Marios**, Saturday, February 16, 2013 at 10:09aml2/h1=1.8

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