Lenses

Front

What is a convex lens?

Back

A lens that is thicker in the middle than at the edges, causing light rays to converge.

Front

How does a convex lens affect light rays?

Back

It converges light rays, bringing them together to a focal point.

Front

What is the focal point of a lens?

Back

The point where light rays converge after passing through the lens.

Front

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

Back

A convex lens is thicker in the middle and converges light, while a concave lens is thinner in the middle and diverges light.

Front

What does 'converging' mean in optics?

Back

It refers to light rays coming together at a point.

Front

What does 'diverging' mean in optics?

Back

It refers to light rays spreading apart from a point.

Front

What is a prism?

Back

A transparent optical element that refracts light, breaking it into its component colors.

Front

What is the effect of a convex lens on parallel light rays?

Back

It causes them to converge towards the focal point.

Front

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

Back

A lens with a greater curvature has a shorter focal length.

Front

What is the principle of refraction?

Back

The bending of light as it passes from one medium to another due to a change in speed.