1.

The magnification of an object placed in front of a convex lens of focal length 20 cm is +2. To obtain a magnification of −2, the object has to be moved by a distance equal to:

Answer»

The magnification of an object placed in front of a convex lens of focal length 20 cm is +2. To obtain a magnification of 2, the object has to be moved by a distance equal to:



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