Polarization of Light

# Polarization of Light Video Lecture | Physics Class 12 - NEET

## Physics Class 12

105 videos|425 docs|114 tests

## FAQs on Polarization of Light Video Lecture - Physics Class 12 - NEET

 1. What is polarization of light?
Ans. Polarization of light refers to the orientation of the electric field vector associated with a light wave. It describes the direction in which the electric field oscillates. Light waves can be polarized in different ways, including linear polarization, circular polarization, and elliptical polarization.
 2. How is light polarized?
Ans. Light can be polarized through various mechanisms. One common method is by passing unpolarized light through a polarizing filter, such as a polaroid sheet. The polarizing filter selectively transmits light waves that oscillate in a specific direction, blocking the waves oscillating in other directions and resulting in polarized light.
 3. What are the applications of polarized light?
Ans. Polarized light has numerous applications in various fields. It is extensively used in optical microscopy to enhance image contrast and reduce glare. Polarized sunglasses utilize the properties of polarized light to reduce glare from horizontal surfaces. Additionally, polarized light is used in liquid crystal displays (LCDs) and 3D movies to control the transmission of light.
 4. Can all types of light be polarized?
Ans. No, not all types of light can be polarized. Light emitted by a common light bulb or the Sun is typically unpolarized, meaning its electric field oscillates in all possible directions perpendicular to the direction of propagation. However, certain light sources, such as lasers, can emit polarized light naturally.
 5. What is the significance of polarization in photography?
Ans. Polarization plays a crucial role in photography. By using a polarizing filter, photographers can selectively block or transmit polarized light, resulting in various effects. These filters can enhance colors, reduce reflections and glare, and darken the sky in landscape photography. They are also useful for capturing underwater scenes by reducing the light reflected from the water surface.

## Physics Class 12

105 videos|425 docs|114 tests

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