What are the rules for making ray diagram

1.	What are the rules for making ray diagram
Answer» \tA ray incident parallel to the principal axis of a convex mirror after reflection will appear to come from the focus.\tA ray directed towards the focus of a convex mirror after reflection will become parallel to the principal axis.\tA ray directed towards center of curvature of convex mirror is reflected back along the same path .\tA ray incident obliquely at the pole of convex mirror is reflected obliquely by making equal angle of incidence and reflection with the principal axis.

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