An object placed on a metre scale at 10.0 cm mark was focussed on a white screen placed at 90.0 cm mark using a converging lens placed on the scale at 50.0 cm mark.
(i) Find the focal length of the converging lens.
(ii) Find the position of the image formed if the object is shifted towards the lens at a position marked 30.0 cm on the scale.
(iii) List two characteristics of the image formed if the object is further shifted towards the lens.