Convex/concave lenses

Front

What is the focal point?

Back

The point where rays of light meet after passing through a lens.

Front

What is refraction?

Back

The change in the path of light as it passes from one medium to another.

Front

Are concave lenses thick in the middle and thin at the edges?

Back

FALSE. Concave lenses are thin in the middle and thicker at the edges.

Front

How does a concave lens differ from a convex lens?

Back

A concave lens is curved inward on both sides; a convex lens is curved outward on at least one side.

Front

What is a diverging lens?

Back

A lens that spreads out light rays, also known as a concave lens.

Front

What type of lens is a convex lens?

Back

A converging lens that is thicker in the center and thinner at the edges.

Front

What happens to light rays when they pass through a convex lens?

Back

They converge or come together at the focal point.

Front

What is the primary use of concave lenses?

Back

To correct nearsightedness (myopia) by diverging light rays.

Front

What is the primary use of convex lenses?

Back

To correct farsightedness (hyperopia) by converging light rays.

Front

What is the relationship between the focal length and the curvature of a lens?

Back

The more curved the lens, the shorter the focal length.