Where is the principle focus?

What letter do we use to label principle focus?

What is the distance from the centre of the lens to the principle focus called?

If a lens is made more curved, what happens to its power?

If a lens is made more powerful, what happens to focal length?

What is the axis of a lens?

What happens if any light ray passes through the axis of a lens?

How do lenses form images?

Where are images formed?

What are the two types of image that can be formed by lenses?

What is a virtual image?

What can’t a virtual image do?

What is a real image?

What can a real image do?

What is the name for rays of light being brought together?

What is a convex lens?

What is the other name for convex lenses?

What is the principle fous of a converging lens?

How are convex lenses drawn in ray diagrams?

What does a converging lens do to rays of light?

What is the image produced from an object nearer than F from a coverging lens like?

What is the image produced from an object at 2F from a coverging lens like?

What is the image produced from an object between F and 2F from a coverging lens like?

The image produced by a convex lens can be…

What is the name for rays of light spreading out?

What is a concave lens?

What is the other name for concave lenses?

What is the principle fous of a diverging lens?

How do you find the virtual principle focus of a diverging lens?

How are concave lenses drawn in ray diagrams?

At what point are parallel rays brought together in a converging lens?

What does a diverging lens do to rays of light?

What is the image produced by a diverging lens like?

The image produced by a concave lens is…