Question

Study the diagram below.

1. Name the lens LL’.
2. What are the points O and O' called ?
3. Complete the diagram to form the image of the object AB.
4. State three characteristics of the image.

Answer 1

1. LL' is concave lens.
2. O and O' are called the first and second focal points, respectively.
3. 
   
4. The three characteristics of the image are virtual, erect and diminished.