As an ant on the axis of a concave mirror crawls from a
Chapter , Problem 7(choose chapter or problem)
As an ant on the axis of a concave mirror crawls from a great distance to the focal point of a concave mirror, the image of the ant moves (a) from a great distance toward the focal point and is always real, (b) from the focal point to a great distance from the mirror and is always real, (c) from the focal point to the center of curvature of the mirror and is always real, (d) from the focal point to a great distance from the mirror and changes from a real image to a virtual image.
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