Question

A convex lens forms an inverted image of size same as that of the object which is placed at a distance 60 cm in front of the lens. Find: The position of image

Answer 1

A convex lens forms an inverted, real, and an image of the same size as the object when the object is placed at 2f, i.e. (u = 2f).

In such cases, the image is formed at the point which is double the focal length on the other side of the lens (2f₂).