A point object is placed 30cm in front of a thin convex lens of focal length 20cm. Answer the following:
(a) Calculate the distance of the image from the lens.
(b) Determine whether the image formed is real or virtual and state whether it is erect or inverted.
(c) Find the magnification produced by the lens and comment on the size of the image relative to the object.
(d) Draw a neat, labelled ray diagram corresponding to this situation to support your numerical answers.