Question

State the position of the object in front of a converging lens if it produces a real and same size image of the object.

Answer 1

The converging lens forms a real image of same size as that of object only when the object is placed at a distance twice the focal length of the lens. So, the object must be placed at center of curvature i.e. $\left(2f\right)$ of the lens so that real and same size image is formed.