Question

Complete the diagram given below to show the formation of image of the object AB.
(a) Name the lens LL'.
(b) What are the points O and O' called?
(c) Where is the image formed?

[5 MARKS]

Answer 1

ray diagram: 2 Marks
Each subpart: 1 Mark each

The complete ray diagram is shown below:
(a) The lens LL' is concave.
(b) The points O and O' are called the first and second focal points respectively of the lens.
(c) The image is formed between the focus and the optical centre.