Draw suitable rays by which we can guess the position of the image formed by a concave mirror.
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Ray from top of the object B towards the mirror, paraxially. reflects thru Focus.
Ray from top of the object B towards the pole of the mirror.
Ray from top of the object B through center C of mirror, retraces its path after reflection.
Ray from the bottom of the object A, along the principal axis.
Answer:
The following rays are used to guess the position of the image formed by a concave mirror.
i) A ray parallel to the principal axis passing through principal focus (F) after reflection from a concave mirror.
ii) A ray passing through ‘F’ becomes parallel to principal axis after reflection from a concave mirror.
iii) A ray passing through ‘C’ is reflected back along the same path after reflection from a concave mirror.
iv) A ray incident obliquely to the principal axis towards the pole P, on the concave mirror is reflected obliquely, following the laws of reflection.