If the magnification has a positive sign, the image formed by the concave mirror must be
Virtual and erect
Real and erect
Virtual and inverted
Real and inverted
Magnification produced by a concave mirror is positive, when the image is virtual and erect.
For the image formation in a concave mirror, the object distance is 5 cm and the image distance is 15 cm on the same side as that of the object. Find the magnification and nature of the image.
The magnification produced by a lens is m = - 1.5. What are the characteristics of the image formed?