Mirrors and Lenses

Front

What causes mirages?

Back

Refraction.

Front

Which material has the highest index of refraction?

Back

Glass.

Front

Does temperature affect the speed of light?

Back

True.

Front

Which material has the lowest index of refraction?

Back

Air.

Front

What is the point where light rays meet called?

Back

The focal point.

Front

What is refraction?

Back

The bending of light as it passes from one medium to another.

Front

What is the index of refraction?

Back

A measure of how much light slows down in a medium compared to its speed in a vacuum.

Front

What happens to light when it passes through a convex lens?

Back

It converges to a focal point.

Front

What happens to light when it passes through a concave lens?

Back

It diverges.

Front

What is the focal length of a lens?

Back

The distance from the lens to the focal point.