English
Tamil Nadu Board of Secondary EducationHSC Science Class 12

List the uses of polaroids. - Physics

Advertisements
Advertisements

Question

List the uses of polaroids.

Short/Brief Note
Advertisements

Solution

  1. Polaroids are used in goggles and cameras to avoid glare of light.
  2. Polaroids are useful in three dimensional motion pictures i.e., in holography.
  3. Polaroids are used to improve contrast in old oil paintings.
  4. Polaroids are used in optical stress analysis.
  5. Polaroids are used as window glasses to control the intensity of incoming light.
shaalaa.com
  Is there an error in this question or solution?
Chapter 7: Wave Optics - Evaluation [Page 103]

APPEARS IN

Samacheer Kalvi Physics - Volume 1 and 2 [English] Class 12 TN Board
Chapter 7 Wave Optics
Evaluation | Q 31. | Page 103

RELATED QUESTIONS

If the polarising angle for a given medium is 60°, then the refractive index of the medium is.................


What is a Polaroid?


For a glass plate as a polariser with refractive index 1.633, calculate the angle of incidence at which light is polarised.


Show, using a simple polaroid, that light waves are transverse in nature. Intensity of light coming out of a polaroid does not change irrespective of the orientation of the pass axis of the polaroid. Explain why.


Why does an unpolarised light incident on a polaroid get linearly polarised ?


Show, via a suitable diagram, how unpolarised light can be polarised by reflection.


When a low flying aircraft passes overhead, we sometimes notice a slight shaking of the picture on our TV screen. Suggest a possible explanation.


State two uses of Polaroid.


The glass plate of refractive index 1.732 is to be used as a polarizer, its polarising angle is _______.


Show using a proper diagram how unpolarised light can be linearly polarised by reflection from a transparent glass surface.


Which of the following properties shows that light is a transverse wave?


Green light is incident at the polarising angle on a certain transparent medium. The angle of refraction is 30° . Find
(i) polarising angle, and
(ii) refractive index of the medium.


Light transmitted by Nicol prism is ______.


What is a polariser?


What is unpolarised light?


State and obtain Malus’ law.


Discuss about Nicol prism.


What is normal focusing?


Consider a light beam incident from air to a glass slab at Brewster’s angle as shown in figure. A polaroid is placed in the path of the emergent ray at point P and rotated about an axis passing through the centre and perpendicular to the plane of the polaroid.


An unpolarized light beam is incident on the polarizer of a polarization experiment and the intensity of light beam emerging from the analyzer is measured as 100 Lumens. Now, if the analyzer is rotated around the horizontal axis (direction of light) by 30° in clockwise direction, the intensity of emerging light will be ______ Lumens.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×