Question

Where should an object be placed in front of a convex lens so as to obtain its

b. real, erect, and highly enlarged image.

Answer 1

1. A convex lens forms real as well as virtual images.
2. The real images form below the principal axis. Hence they are always inverted.
3. The virtual images form above the principal axis. Hence they are always erect.
4. Thus, a convex lens cannot form a real and erect image.

Hence, for the given situation there is no possible position for the object.