05/21/25 DOL

What does Malus's Law describe in physics?

• The relationship between force and acceleration

• The intensity of polarized light after passing through a polarizer

• The speed of sound in air

• The reflection of light from a mirror

Which device uses wave polarization to allow only certain light waves to pass through?

• Thermometer

• Polarizing filter

• Barometer

• Voltmeter

• The initial intensity of unpolarized light

• The final intensity after passing through a polarizer

• The angle between polarizers

• The speed of light

Which of the following is an application of wave polarization?

• 3-D movie glasses

• Thermometers

• Springs

• Magnets

What is the main function of LCD computer screens that involves polarization?

• To heat up the screen

• To control the brightness and color using polarized light

• To produce sound

• To store data

Which type of light is blocked by polarizing sunglasses?

• Light vibrating in all directions

• Only red light

• Only blue light

• Only ultraviolet light

• It doubles

• It becomes zero

• It stays the same

• It halves

Which of the following best describes polarized light?

• Light that vibrates in one direction only

• Light that is invisible

• Light that travels in a vacuum

• Light that is reflected

What is the purpose of using two polarizing filters in 3-D movie glasses?

• To block all light

• To allow each eye to see a different image

• To increase the brightness

• To change the color of the movie

Which component in an LCD screen manipulates the polarization of light to display images?

• Liquid crystals

• Magnets

• Wires

• Lenses