Polarization of Light

The production of light with a specific pattern of oscillation.

• reflection

• polarization

• refraction

• diffraction

Tags

NGSS.HS-PS4-3

A Polarizing filter is used to reduce glare on reflective surfaces including glass, windows, and water.

• True

• False

Tags

NGSS.MS-PS4-2

Approximately how much light is blocked by two polarizing filters that are perpendicular to each other?

• 0%

• 50%

• 75%

• 100%

Tags

NGSS.HS-PS4-3

Approximately how much light is blocked by a single polarizing filter?

• 0%

• 50%

• 75%

• 100%

Tags

NGSS.HS-PS4-5

Polarized light of intensity I₀ is incident on a polarising filter. The angle between the plane of polarisation of the incident light and the transmission plane of the polariser is θ. Which graph shows how the intensity I of the light transmitted through the polariser varies with θ?

• A

• B

• C

• D

If the polarizing axis of the second filter is parallel to

that of the first, the light will .............

• pass through it

• block

• reflect

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-5

•An initially unpolarized light of intensity Io is incident to a polarizer. The transmitted light then goes through an analyzer that makes a 30 angle with the axis of the initial polarizer. In terms of Io, what is the intensity of the light transmitted through the analyzer?

• 0 Io

• 0.33 Io

• 0.5 Io

• 0.375 Io

A student stands 10 feet away from a light bulb. The student walks toward the light bulb to a 5 feet distance. Which is true? Intensity = 1 / d²

• The bulb appears 2x's brighter

• The bulb appears 4x's brighter

• The bulb appears 5x's brighter

• The bulb appears 25x's brighter

Polarized light travels to a polarizer whose transmission axis makes an angle of $25\degree$ . Calculate the fraction of incident light intensity that gets transmitted through the polarizer. 

• 82%

• 41%

• 91%

• 18%

Light shines through a hole into a box and come out the other side with ~38% of the initial intensity. You know there are only two polarizers in the box. Which of the following is the closest angle difference between the two polarizers?

•  $30\degree$ 

•  $90\degree$  
  

•  $40\degree$  

•  $45\degree$