(i)Name the lens LL’.
(ii)What are the points O and O’ called?
(iii)Complete the diagram to form the image of the object AB.
(iv)State three characteristics of the image.
Solution:
(i) LL’ represents a concave lens in the diagram above.
(ii) The point O is the second focal point and O’ is the first focal point.
(iii) The complete ray diagram is show below –
(iv) The three characteristics of the image are
(a) virtual,
(b) erect and
(c) diminished.