Polarization of light
Grade 11 Science Worksheet
Circle the best answer, or write your answer on the line.
Unpolarized light of 200 W/m² passes two filters whose slots are 30° apart. How intense is the light after both, Ari?
Unpolarized light of 120 W/m² passes two filters whose slots are 60° apart. How intense is the light after both, Bo?
Unpolarized light of 80 W/m² passes two filters whose slots are 45° apart. How intense is the light after both, Esme?
Using the table, why does 60° give 20 W/m², Luz?
- 80 ÷ 4 since 60 is 4 × 15
- 80 × cos 60° = 20
- 80 × cos² 60° = 20
Two filters are crossed at 90°. How much light gets through both, Milo?
- Half
- A quarter
- No light
A third filter at 45° is slipped between two crossed filters. What happens, Noah?
- More light than before any filters
- Some light gets through
- Still no light
Two filters have their slots lined up. What fraction of the light from the first passes the second, Pia?
- All of it
- Half of it
- None of it
Light reflected off a lake is mostly polarized in which direction, Ren?
- In many directions at once
- Vertically
- Horizontally
Which way should the slots in polarized sunglasses run to block glare off water, Tala?
- Up and down
- Side to side
- At random
Polarized sunglasses are turned 90° while looking at a lake. What happens to the glare, Zee?
- Nothing changes
- It disappears more
- It comes back