State the two convenient rays that are chosen to construct the image by a spherical mirror for a given object? Explain your answer with the help of suitable ray diagrams.

(i) Name the mirrors shown in figure (a) and (b).

(ii) In each case (a) and (b), draw the reflected rays for the given incident rays and mark focus by the symbol F.

Complete the following diagrams shown in figure by drawing the reflected ray for each of the incident ray A and B.

Explain the meaning of the terms focus and focal length in case of a convex mirror, with the help of a suitable ray diagram.