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State Brewster’s law. - Physics

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प्रश्न

State Brewster’s law.

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उत्तर

The law states that the tangent of the polarising angle for a transparent medium is equal to its refractive index, tan i = n. This relation is known as Brewster’s law.

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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 32. | पृष्ठ १०३

संबंधित प्रश्न

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


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 Io is incident on P1. A third polaroid P3 is kept in between P1 and P2 such that its pass axis makes an angle of 45° 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)


What is the value of refractive index of a medium of polarising angle 60°?


State two uses of Polaroid.


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


State any two methods by which ordinary light can be polarised


Unpolarised light is incident on a polaroid. How would the intensity of transmitted light change when the polaroid is rotated?


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.


The transverse nature of light is shown in ______.


What is polarisation?


What is unpolarised light?


What is partially polarised light?


List the uses of polaroids.


Discuss about pile of plates.


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


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