Advertisements
Advertisements
Question
What is polarisation?
Solution
The phenomenon of restricting the vibrations of light (electric or magnetic field vector) to a particular direction perpendicular to the direction of wave propagation motion is called polarization of light.
APPEARS IN
RELATED QUESTIONS
Find an expression for intensity of transmitted light when a polaroid sheet is rotated between two crossed polaroids. In which position of the polaroid sheet will the transmitted intensity be maximum?
Two polaroids P1 and P2 are placed with their pass axes perpendicular to each other. An unpolarised light of intensity I0 is incident on P1. A third polaroid P3 is kept in between P1 and P2 such that its pass axis makes an angle of 30° with that of P1. Determine the intensity of light transmitted through P1, P2 and P3
State two uses of Polaroid.
What does a polaroid consist of? How does it produce a linearly polarised light?
Unpolarised light is incident on a polaroid. How would the intensity of transmitted light change when the polaroid is rotated?
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.
Explain how an unpolarised light gets polarised when incident on the interface separating the two transparent media.
Light transmitted by Nicol prism is ______.
Discuss polarisation by selective absorption.
What is plane polarised light?
List the uses of polaroids.
State Brewster’s law.
What is the angle of polarisation and obtain the equation for an angle of polarisation?
What is double refraction?
Mention the types of optically active crystals with example.
Polarisation of light is the only phenomenon that establishes ______.
A polarizer - analyser set is adjusted such that the intensity of light coming out of the analyser is just 10% of the original intensity. Assuming that the polarizer - analyser set does not absorb any light, the angle by which the analyser need to be rotated further to reduce the output intensity to be zero, is ______.