Which of the following is responsible for the polarization of light?
a) Reflection
b) Refraction
c) Diffraction
d) Scattering
What is the direction of polarization of light in a polarized wave?
a) Perpendicular to the electric field
b) Parallel to the electric field
c) Parallel to the magnetic field
d) Perpendicular to the magnetic field
What type of light is completely polarized when reflected at the Brewster angle?
a) Unpolarized light
b) Polarized light
c) Circularly polarized light
d) Plane-polarized light
Which of the following materials can be used to polarize light?
a) Glass
b) Polarizing filter
c) Mirror
d) Water
When unpolarized light passes through a polarizing filter, what happens to the intensity of light?
a) It increases
b) It decreases
c) It remains the same
d) It oscillates
What is the phenomenon of light becoming polarized due to reflection called?
a) Reflection law
b) Brewster’s law
c) Snell’s law
d) Huygens’ principle
The angle at which light becomes completely polarized upon reflection is known as the:
a) Angle of incidence
b) Critical angle
c) Brewster’s angle
d) Diffraction angle
Which of the following can be polarized?
a) Longitudinal waves
b) Transverse waves
c) Both longitudinal and transverse waves
d) None of the above
What type of light is produced by a laser?
a) Unpolarized light
b) Circularly polarized light
c) Plane-polarized light
d) Diffuse light
What is the effect of passing light through two polarizing filters placed at right angles to each other?
a) Light passes through unchanged
b) No light passes through
c) Light becomes more intense
d) The light changes color
Which of the following is the result of using a polaroid in sunglasses?
a) Increase in light intensity
b) Elimination of glare
c) Increase in UV exposure
d) Decrease in contrast
In which type of wave does polarization occur?
a) Sound waves
b) Electromagnetic waves
c) Mechanical waves
d) Gravitational waves
What is the main use of polarized light in microscopy?
a) To increase the resolution of the sample
b) To examine the chemical composition of the sample
c) To reduce light intensity
d) To highlight certain structures in the sample
Which of the following is an application of polarized light?
a) 3D movies
b) Radio communication
c) X-ray imaging
d) All of the above
What happens when two polarizing filters are placed at 90° to each other?
a) Maximum light passes through
b) No light passes through
c) Light intensity is halved
d) Light intensity doubles
Which of the following materials cannot polarize light?
a) Air
b) Glass
c) Water
d) Polaroid filter
What is the effect of a polarizer on unpolarized light?
a) It causes light to scatter
b) It blocks all light
c) It changes the color of light
d) It allows only a specific orientation of light waves to pass
Which of the following statements is true about polarization?
a) Polarization only occurs in longitudinal waves
b) Polarization occurs in both longitudinal and transverse waves
c) Polarization only occurs in transverse waves
d) Polarization occurs in sound waves
What is a common application of polarization in photography?
a) To brighten images
b) To enhance contrast and reduce glare
c) To increase sharpness
d) To change the color saturation
How can the polarization of light be tested?
a) Using a diffraction grating
b) By observing the intensity of light through a polarizing filter
c) By changing the frequency of light
d) By measuring the wavelength of light
Which type of light waves does a polarizing filter block?
a) Light waves vibrating in all directions
b) Light waves vibrating in one direction
c) Only infrared waves
d) Only visible light
What is the main characteristic of plane-polarized light?
a) It vibrates in all directions
b) It vibrates in only one direction
c) It is scattered
d) It is diffracted
What does the Brewster angle depend on?
a) The refractive index of the material
b) The temperature of the light source
c) The wavelength of the light
d) The intensity of the light
What happens when light is passed through a polarizing filter oriented at 45° to the light’s initial polarization direction?
a) Half of the light passes through
b) All of the light passes through
c) No light passes through
d) The light intensity doubles
What is the result of passing light through a polaroid filter?
a) The light becomes polarized
b) The intensity of light increases
c) The color of the light changes
d) The light is scattered
Which of the following is a characteristic of circularly polarized light?
a) Light waves vibrate in one plane
b) Light waves oscillate in a circular motion
c) The intensity remains constant in all directions
d) The light is invisible
What is the primary function of a polarizing filter in 3D cinema?
a) To increase the brightness of the image
b) To separate light into two different polarization states
c) To colorize the image
d) To reduce contrast
Which optical device is used to produce polarized light in the laboratory?
a) Diffraction grating
b) Polarizer
c) Lens
d) Reflector
What happens to unpolarized light when it passes through a polaroid filter?
a) It is absorbed
b) Its intensity remains the same
c) It becomes plane-polarized
d) It becomes circularly polarized
