Study the diagram given below.

(a) Name the lens LL'.

(b) What are the points O and O' called?

(c) Complete the diagram to form the image of the object AB.

(d) State the three characteristics of the image.

(e) Name a device in which this action of lens is used.

The following diagram in figure shows an object AB and a converging lens L with foci F₁ and F₂.

(a) Draw two rays from the object AB and complete the diagram to locate the position of the image CD. Also mark on the diagram the position of eye from where the image can be viewed.

(b) State three characteristics of the image in relation to the object.

A converging lens forms the image of an object placed in front of it, beyond 2F₂ of the lens.

(a) Where is the object placed?

(b) Draw a ray diagram to show the formation of an image.

(c) State three characteristics of the image.

The diagram given below in figure shows the position of an object OA in relation to a converging lens L whose foci are at F₁ and F₂.

(i) Draw two rays to locate the position of the image.

(ii) State the position of the image with reference to the lens.

(iii) Describe the three characteristics of the image.

(iv) Describe how the distance of the image from the lens and its size change as the object is moved towards F₁.