The two rays which are considered to obtain the image are:
A ray passing through the centre of curvature. A ray parallel to the principal axis. The ray passing through the centre of curvature retraces its path and the ray which is parallel to the principal axis passes through the focus after reflection. These rays after reflection meet at a point between C and F. The image is inverted, real and diminished.
The image is:
Between C and F
Real
Inverted
Diminished
