The linear magnification of an object placed on the principal axis of a convex lens of focal length 30 cm is found to be + 2. In order to obtain a magnification of -2, by how much distance should the object be moved?

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The linear magnification of an object placed on the
principal axis of a convex lens of focal length 30 cm
is found to be + 2. In order to obtain a magnification
of -2, by how much distance should the object be
moved?
Transcribed Image Text:The linear magnification of an object placed on the principal axis of a convex lens of focal length 30 cm is found to be + 2. In order to obtain a magnification of -2, by how much distance should the object be moved?
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