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What is double refraction? - Physics

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प्रश्न

What is double refraction?

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उत्तर

When a ray of unpolarised light is incident on a calcite crystal, two refracted rays are produced. Hence, two images of a single object are formed. This phenomenon is called double refraction.

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अध्याय 7: Wave Optics - Evaluation [पृष्ठ १०३]

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सामाचीर कलवी Physics - Volume 1 and 2 [English] Class 12 TN Board
अध्याय 7 Wave Optics
Evaluation | Q 35. | पृष्ठ १०३

संबंधित प्रश्न

Three identical polaroid sheets P1, P2 and P3 are oriented so that the pass axis of P2 and P3 are inclined at angles of 60° and 90° respectively with the pass axis of P1. A monochromatic source S of unpolarised light of intensity I0 is kept in front of the polaroid sheet P1 as shown in the figure. Determine the intensities of light as observed by the observer at O, when polaroid P3 is rotated with respect to P2 at angles θ = 30° and 60°.


Show, with the help of a diagram, how unpolarised sunlight gets polarised due to scattering.


Using the phenomenon of polarisation, show how the transverse nature of light can be demonstrated.


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


Two polaroids P1 and P2 are placed with their pass axes perpendicular to each other. 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 60° with that of P1. Determine the intensity of light transmitted through P1, P2 and P3.


What is the Brewster angle for air to glass transition? (Refractive index of glass = 1.5)


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


With the help of an experiment, state how will you identify whether a given beam of light is polarised or unpolarized?


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?


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


Explain how an unpolarised light gets polarised when incident on the interface separating the two transparent media.


Greenlight is an 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.


What is partially polarised light?


An unpolarised light of intensity 32 Wm-2 passes through three Polaroids such that the axes of the first and the last Polaroids are at 90°. What is the angle between the axes of the first and middle Polaroids so that the emerging light has an intensity of only 3 Wm-2?


The reflected light is found to be plane polarised when an unpolarized light falls on a denser medium at 60° with the normal. Find the angle of refraction and critical angle of incidence for total internal reflection in the denser to rarer medium reflection.


Which of the following phenomena is not common to sound and light waves?


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.


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