Study the diagram below.
Study the diagram below.

(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.