The diagram given below shows an object O and its image I.Without actually drawing the ray diagram, state the following :
(i) Type of lens (Converging/Diverging)
(ii) Name two optical instruments where such an image is obtained.
(iii) List three characteristics of the image formed if this lens is replaced by a concave mirror of focal length ' f ' and an object is placed at a distance ' f∕2 ' in front of the mirror.