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Polarisation Free Doubts and Solutions

CBSE - XII Science - Physics - Wave Optics

pl explain polarisation by reflection with diagram

Asked by Rajeev 21st February 2016, 11:59 PM
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CBSE - XII Science - Physics - Wave Optics

Figure shows a system of 2 polarizizng sheets in the path of initiallyunpolarised light.The polarizing direction of first sheet is parallel to x-axis and that of second sheet is 60 degree  clockwise from x-axis.Calculate what fraction of intensity of light emerges from the system

Asked by Rajeev 16th February 2016, 9:19 PM
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CBSE - XII Science - Physics - Wave Optics

What dose a polaroid consist of? 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.

Asked by Topperlearning User 10th July 2015, 7:43 AM
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CBSE - XII Science - Physics - Wave Optics

An unpolarised light is successively passed through two polaroids .Their transmission axis make 60 degree with each other. If intensity of unpolarised light be I ,then intensity after second polariser is 
1) I/2
2) I/4
3) I/ 8
4) I/3
Please explain in detail.


Asked by Kb Aulakh 25th April 2015, 6:18 PM
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CBSE - XII Science - Physics - Wave Optics

brewester law
 

Asked by Mendy 25th January 2015, 12:03 PM
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CBSE - XII Science - Physics - Wave Optics

Describe briefly, with the help of suitable diagram, how the transverse nature of light can be demonstrated by the phenomenon of polarization.

Asked by Topperlearning User 13th June 2014, 3:43 PM
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CBSE - XII Science - Physics - Wave Optics

a) How can you distinguish between plane polarised light and partially polarised light. b) State Malus law.

Asked by Topperlearning User 13th June 2014, 2:51 PM
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CBSE - XII Science - Physics - Wave Optics

What is an unpolarized light? Explain with the help of suitable ray diagram how an unpolarized light can be polarized by reflection from a transparent medium. Write the expression for Brewster angle in terms of the refractive index of denser medium

Asked by Topperlearning User 13th June 2014, 2:23 PM
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CBSE - XII Science - Physics - Wave Optics

Which plane is defined as plane of vibration in a plane polarized electromagnetic wave?

Asked by Topperlearning User 13th June 2014, 1:36 PM
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CBSE - XII Science - Physics - Wave Optics

The refractive index of the denser media is 1.732. Calculate (i) the polarizing angle of medium,(ii)the angle of refraction.

Asked by Topperlearning User 13th June 2014, 1:30 PM
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CBSE - XII Science - Physics - Wave Optics

How can one distinguish between an unpolarised light beam and a plane polarized light beam using a Polaroid?

Asked by Topperlearning User 13th June 2014, 1:22 PM
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CBSE - XII Science - Physics - Wave Optics

Briefly explain polarisation by scattering?

Asked by Topperlearning User 13th June 2014, 1:12 PM
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CBSE - XII Science - Physics - Wave Optics

State Brewster's law.

Asked by Topperlearning User 13th June 2014, 12:56 PM
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CBSE - XII Science - Physics - Wave Optics

What is a Polaroid? Write few uses of Polaroid's.

Asked by Topperlearning User 13th June 2014, 12:51 PM
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CBSE - XII Science - Physics - Wave Optics

Which of the following waves can be polarized (i) Heat waves (ii) Sound waves? Give reason to support your answer.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Physics - Wave Optics

If the angle between the pass axes of a polariser and analyser is 45º. Write the ratio of the intensities of original light and the transmitted light after passing through the analyser.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Physics - Wave Optics

A polarizing sheet is placed in the path of a polarized beam of light. The intensity of transmitted beam is half that of incident beam. What is the angle between the polarization of incident beam and the transmitted beam?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Physics - Wave Optics

Two Polaroid’s are used to study polarization. If the analyzer is rotated through the angles of 450, 900   and 1800  in turn, how much the intensity of light coming out of the analyzer be affected by these angles of rotation, as compared to the initial intensity?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Physics - Wave Optics

What is plane polarized light?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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