Refraction of Light

Mr. Anderson explains the refraction of light, using Snell's Law to quantify it. He introduces the concept of the critical angle and total internal reflection. A marching band analogy helps illustrate how light bends when moving between different media. The video also covers practical applications of refraction in prisms and spheres, using Snell's Law to solve related problems.

What happens to light when it moves from air into glass at an angle?

• It continues in a straight line.

• It gets absorbed completely.

• It bends towards the normal.

• It bends away from the normal.

Which law helps us calculate the angle of refraction?

• Hooke's Law

• Ohm's Law

• Snell's Law

• Newton's Law

What is the critical angle?

• The angle at which light is completely absorbed.

• The angle at which light stops bending.

• The angle at which light is completely reflected.

• The angle at which light travels fastest.

In the marching band analogy, what happens when the band enters a slower medium?

• The band bends away from the normal.

• The band speeds up.

• The band maintains its speed.

• The band bends towards the normal.

How does light behave when it exits a slower medium into a faster one?

• It bends towards the normal.

• It bends away from the normal.

• It continues in a straight line.

• It gets absorbed.

What is the index of refraction a measure of?

• The speed of light in a vacuum.

• The color of light.

• The speed of light in a medium.

• The angle of incidence.

If light enters a medium with a higher index of refraction, what happens to its speed?

• It increases.

• It decreases.

• It becomes zero.

• It remains the same.

What happens to light at the critical angle?

• It is refracted into the new medium.

• It is absorbed by the medium.

• It travels along the boundary.

• It is reflected back into the original medium.

In the context of refraction, what does Snell's Law relate?

• The speed of light and its wavelength.

• The intensity of light and its speed.

• The angle of incidence and the angle of refraction.

• The color of light and its frequency.

What is total internal reflection?

• When light travels in a straight line.

• When all light is refracted into the new medium.

• When all light is absorbed by the medium.

• When all light is reflected back into the original medium.