Refraction Notes - Quiz

What happens to light waves at a medium boundary?

• They are absorbed completely.

• They are only reflected.

• They change speed, wavelength, and direction.

• They disappear.

What is the term for the bending of light as it passes through a boundary?

• Reflection

• Diffusion

• Refraction

• Absorption

What phenomenon is demonstrated by the appearance of a pencil in a glass of water?

• Reflection

• Refraction

• Diffraction

• Absorption

Is there ever a time that light does not refract at a boundary?

• Yes, when the wave is parallel to the boundary.

• Yes, when the wave is perpendicular to the boundary.

• No, light always refracts at a boundary.

• Yes, when the wave is at a 45-degree angle to the boundary.

Why does light refract at a boundary?

• Because of a change in speed at that boundary.

• Because of a change in color at that boundary.

• Because of a change in direction at that boundary.

• Because of a change in temperature at that boundary.

What is the term used to describe the bending of light as it passes from one medium to another?

• Reflection

• Diffraction

• Refraction

• Absorption

How does optical density affect the speed of light in a substance?

• The more optically dense, the faster the speed of light.

• The more optically dense, the slower the speed of light.

• Optical density does not affect the speed of light.

• The less optically dense, the slower the speed of light.

What does FST stand for in wave bending?

• Fast to slow, towards Normal

• Slow to fast, away from Normal

• Fast to fast, away from Normal

• Slow to slow, towards Normal

What does SFA stand for in wave bending?

• Slow to fast, away from Normal

• Fast to slow, towards Normal

• Slow to slow, towards Normal

• Fast to fast, away from Normal

In the Marching Soldiers Analogy, what happens when the wave moves from a fast medium to a slow medium?

• The wave bends towards the Normal

• The wave bends away from the Normal

• The wave does not bend

• The wave bends parallel to the Normal