Concept: As we can see, depending on the location of the object, image distance v can be positive or negative in this example.
As a result, if the object is virtual, the picture generated by a concave mirror is unquestionably real.
As a result, concave mirrors are capable of producing both actual and virtual pictures. If the image is virtual, it can be upright; if it is genuine, it can be inverted.
It is virtual if the picture is behind the mirror, and it is genuine if it is in front of the mirror. The image can also be scaled up, down, or to the same proportions as the object.
Concave mirrors create both physical and virtual images. When the concave mirror is put very close to the object, a virtual and enlarged image is generated; as the distance between the item and the mirror increases, the size of the image decreases and genuine images are formed.
Hence, option 3 is correct.