Lesson 3 Lenses & Reflection

Front

What determines the type of image formed by a lens?

Back

The shape and position of the object.

Front

Which medium does light pass through the slowest?

Back

Glass.

Front

What is the term for light passing from one medium to another?

Back

Refraction.

Front

True or False: Longer wavelengths of light are refracted less than shorter wavelengths.

Back

True.

Front

What optical phenomenon causes a pencil to appear broken when placed in water?

Back

Refraction.

Front

What is the definition of refraction?

Back

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

Front

What is the relationship between the angle of incidence and the angle of refraction?

Back

According to Snell's Law, the ratio of the sines of the angles is constant and depends on the indices of refraction of the two media.

Front

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

Back

It converges to a point.

Front

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

Back

It diverges.

Front

What is the focal point of a lens?

Back

The point where parallel rays of light converge or appear to diverge after passing through the lens.