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Formation of Image by a Concave Mirror
When the Object Is At Infinity
When an object is placed at infinity, its rays are parallel to each other. Consider
two rays, one striking the pole of the mirror and the other passing through the
center of curvature. The incident ray at the pole is reflected according to the law of
reflection, and the second ray that passes through the mirror's center of curvature
retraces its path. After reflection, these rays form an image at the focus. The
resulting image is accurate, inverted, and scaled down.
The image is at F
Real
Inverted
Diminished
When the Object Is Placed Beyond C
The two rays considered in order to obtain the image are:
A ray that passes through the center of the curvature.
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