Answer:
The position of the object  placed so that the image formed is a real image of the same size as the object is at a distance of twice the focal length
Explanation:
In this case, if the object is to be placed in such a way that the image thus formed by the object is real image of the same size so, the position of the object is at a distance  twice  of the focal length .
So the object is  said to be in position at a distance of two times of its focal length  i.e., it can be represented as 2
Explanation: