An object AB is placed between 2F1 and F1 on the principal axis of a convex lens. Obtain the image of the object formed by the lens.
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Solution
The required diagram is shown in the figure. When an object is placed in front of the convex lens, i.e., between 2F1 and F1, its image is formed beyond 2F2 on the other side of the lens. The image is real, inverted and enlarged.