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to intersect, an image is formed. The formation of an image by mirrors is typically
depicted by drawing ray diagrams. To create a ray diagram, we need at least two
rays with known paths after reflection from the mirror. These rays must be chosen
based on our needs. To obtain the image, any two of the following rays can be
considered.
After reflection from a concave mirror, a ray of light parallel to the principal axis
passes through its focus.
After reflection, a ray of light passing through the focus of a concave mirror
emerges parallel to the principal axis.
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