Lenses

What is the main difference between a convex and a concave lens?

• Convex lenses make light rays spread out.

• Convex lenses make light rays converge.

• Concave lenses make light rays converge.

• Concave lenses make light rays stay parallel.

When drawing ray diagrams for a convex lens, what happens to rays that are parallel to the principal axis?

• They disappear.

• They travel out through the focus.

• They bend away from the principal axis.

• They travel straight through the lens.

If an object is placed very close to a convex lens, what type of image is formed?

• Virtual, inverted, and smaller

• Real, upright, and larger

• Virtual, upright, and larger

• Real, inverted, and smaller

What is a characteristic of images formed by concave lenses?

• They are always virtual and upright.

• They are always real and upright.

• They are always real and inverted.

• They are always virtual and inverted.

What does the term 'diminished' mean in the context of lens images?

• The image is upside down.

• The image is the same size as the object.

• The image is smaller than the object.

• The image is larger than the object.