Understanding Polarization and Polaroid Filters

What happens when two Polaroid filters are aligned perpendicularly?

• Light changes color.

• All light passes through.

• No light passes through.

• Light becomes brighter.

How does unpolarized light differ from polarized light?

• Unpolarized light is brighter.

• Polarized light vibrates in multiple planes.

• Unpolarized light vibrates in multiple planes.

• Polarized light is dimmer.

What is the role of molecule alignment in a Polaroid filter?

• It increases the intensity of light.

• It blocks vibrations parallel to the alignment.

• It changes the color of light.

• It reflects all light.

What happens to light when it passes through a Polaroid filter with horizontal molecules?

• Light becomes unpolarized.

• All vibrations pass through.

• Horizontal vibrations are blocked.

• Vertical vibrations are blocked.

When two Polaroid filters are aligned parallel, what is the result?

• Half the light is blocked.

• All light is blocked.

• Light becomes polarized diagonally.

• Light intensity doubles.

What happens to light when it passes through two perpendicular Polaroid filters?

• It becomes unpolarized.

• It is completely blocked.

• It becomes brighter.

• It changes color.

How do sunglasses reduce glare on water surfaces?

• By reflecting all light.

• By increasing light intensity.

• By blocking vertical vibrations.

• By blocking horizontal vibrations.

What is the effect of light reflecting off a nonmetallic surface?

• It becomes unpolarized.

• It becomes partially polarized.

• It changes color.

• It becomes brighter.

How are 3D movies created using polarization?

• By using unpolarized light.

• By using two cameras and two filters.

• By using one camera and one filter.

• By using polarized light in one direction.

What is the purpose of aligning molecules in Polaroid sunglasses?

• To reflect all light.

• To increase brightness.

• To change the color of light.

• To block horizontal glare.