Suppose that the lower half of the concave mirror’s reflecting surface in Fig. 9.5 is covered with an opaque (non-reflective) material. What effect will this have on the image of an object placed in front of the mirror?

When an object was kept in front of a concave mirror , its real image was formed in the same place in the same size. If the distance of the object was 20 cm away from the mirror, what would be the distance of the focus of the mirror.

When an object of height 4 cm is placed in front of a concave mirror an image of height 8 cm is for - med. Find the magnification.