WAEC - Physics (2018 - No. 29)
To obtain a virtual, erect and magnified image from a thin converging lens, an object must be placed
between the focus and the lens
at the focus
between the focal length and twice the focal length
beyond twice the focal length
解释
When the object is placed between the optical centre of the lens and the focal length, the image formed is virtual, erect and magnified.