Polarization of light
Grade 11 Science Worksheet - Building Confidence
Circle the best answer, or write your answer on the line.
Polarized light of 100 W/m² meets a filter turned 60° from its direction. Using I = I₀ cos² θ, how intense is the light that passes, Ari?
Polarized light of 80 W/m² meets a filter turned 30° from its direction. Using I = I₀ cos² θ, how intense is the light that passes, Bo?
Polarized light of 40 W/m² meets a filter turned 45° from its direction. Using I = I₀ cos² θ, how intense is the light that passes, Esme?
In the photon diagram, which way does light vibrate after filter A, Jun?
- Side to side
- In many directions at once
- Up and down
In the photon diagram, why does no light leave filter B, Kira?
Use the picture in question 4.
- Filter A used up the light
- Filter B is painted black
- Its slots cross the light
In the photon diagram, filter B is turned so its slots are vertical. What happens, Luz?
Use the picture in question 4.
- The light changes color
- The light passes B
- No light passes B
Why can light be polarized, Milo?
- It travels very fast
- It is a transverse wave
- It is a longitudinal wave
Why do polarized sunglasses help near a lake, Ren?
- They cut glare off the water
- They block heat
- They make the water brighter
How do some 3-D movie glasses work, Tala?
- Each lens passes one polarization
- They magnify the screen
- Each lens is a different size
Which device uses polarizing filters to make its picture, Zee?
- A loudspeaker
- An LCD screen
- A light switch