Question

Where should an object be placed so that a real and inverted image of the same size as the object is obtained using a convex lens?

Answer 1

The object should be placed at \(2F_1\), i.e. at twice the focal length from the optical centre of the convex lens.

Then the image is formed at \(2F_2\) on the other side of the lens and is real, inverted, and of the same size as the object.