Polarization of Light
Physics ⇒ Light and Optics
Polarization of Light starts at 11 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Polarization of Light.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 12
Describe how a polaroid filter works to polarize light.
Describe the difference between ordinary and extraordinary rays in double refraction.
Explain the difference between plane polarized light and unpolarized light.
Explain why polaroid sunglasses are effective at reducing glare from horizontal surfaces.
A beam of unpolarized light passes through two polaroids. The first is fixed, and the second is rotated by 45° with respect to the first. What is the intensity of the transmitted light as a fraction of the original?
A student observes that the intensity of light passing through two polaroids is zero. What is the angle between their transmission axes?
If the intensity of polarized light after passing through an analyzer is one-fourth of the initial intensity, what is the angle between the polarizer and analyzer?
A beam of plane-polarized light of intensity I0 passes through three polaroids. The first and third polaroids have their transmission axes parallel, while the second is placed between them at an angle θ to the first. Derive an expression for the final transmitted intensity in terms of I0 and θ.
The phenomenon of double refraction is observed in which type of crystals?
(1) Isotropic
(2) Anisotropic
(3) Amorphous
(4) Metallic
When unpolarized light is incident at the Brewster angle on a glass surface, the reflected light is:
(1) Completely polarized parallel to the surface
(2) Completely polarized perpendicular to the surface
(3) Partially polarized
(4) Unpolarized
Which of the following is a necessary condition for polarization by reflection?
(1) The angle of incidence must be 0°
(2) The angle of incidence must be equal to the Brewster angle
(3) The surface must be metallic
(4) The light must be monochromatic
Which of the following is NOT a method of producing polarized light?
(1) Reflection
(2) Refraction
(3) Diffraction
(4) Scattering
A polaroid filter transmits only the component of light vibrating ______ to its axis.
Polarization of light proves that light is a ______ wave.
The Brewster angle is defined as the angle of incidence at which the reflected and refracted rays are ______ to each other.
The law that gives the intensity of polarized light after passing through an analyzer at an angle θ to the polarizer is called ______ law.
True or False: Only electromagnetic waves can be polarized, not mechanical waves.
True or False: The polarization of light can be used to determine stress patterns in transparent plastics.
True or False: Unpolarized light consists of waves vibrating in all possible directions perpendicular to the direction of propagation.
True or False: When two polaroids are placed with their axes perpendicular to each other, no light passes through.
