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• CBSE×
• Class 12 Science×
• Physics×
• Wave Optics×
• Polarisation×

# Polarisation Free Doubts and Solutions

## Prove that the polarising angle of incidence and the corresponding angle of refraction are complementary to each other.

Asked by abhitailor158 3rd March 2019, 6:02 PM

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## When sun is at 37° angle from horizon, then reflected light from water surface is totally polarised.Find refractive index of water

Asked by agarrajeev06 15th January 2019, 5:42 PM

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## Draw an intensity vs angle between the plans of transmission of polarizer and analyzer

Asked by nehanithin25 17th August 2018, 1:52 PM

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## pl explain polarisation by reflection with diagram

Asked by Rajeev 21st February 2016, 11:59 PM

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## Between two polaroids placed in crossed position a third polaroid is introduced.The axis of the third polaroid makes an angle of 30 degree with the axis of the first polaroid. find the intensity of transmitted light from the system assuming Io to be the intensity of polarised light on the first polaroid.

Asked by Rajeev 21st February 2016, 11:25 PM

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## 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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## discuss briefly with the help of asuitable diagram what happens when unpolarised light passes through  two identical polaroids where the orientation of one polariod is fixed and the second is rotated with respect to the one.draw a graph showing the dependence of intensity of transmitted light on the angle betweent the polarizer and analyzer explain cleary how one understand this variation using malus law

Asked by mahamood.iphone 23rd December 2015, 10:25 AM

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## 1.what is polaroid?hoe are they constructed ? mention their important application? 2.state law of malus and draw an intensity v/s angle between the plane of transmission of polarizer and analyzer? 3.state brewsters law and prove that the reflected and refracted rays are mutually perpendicular at the angle of polarization?

Asked by mahamood.iphone 22nd December 2015, 12:35 PM

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## 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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## 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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## brewester law

Asked by Mendy 25th January 2015, 12:03 PM

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## 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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## 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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## 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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## Two polaroids are placed 90Âº to each other and the transmitted intensity is zero. What happens when one more polaroid is placed between these two bisecting the angle between them. Take intensity of unpolarised light Iº'. .How will the intensity of transmitted light vary on further rotating the third polaroid ?

Asked by Topperlearning User 13th June 2014, 2:01 PM

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## An analyzing nicol examines two adjacent plane polarized beams A and B whose planes of polarization are mutually perpendicular .In one position of the analyzer, beam B shows zero intensity. From this position a rotation of 300 shows the two beams are matched (i.e. of equal intensity).Find the intensity ratio of the two beams.

Asked by Topperlearning User 13th June 2014, 1:44 PM

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## 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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## 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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## 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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## Briefly explain polarisation by scattering?

Asked by Topperlearning User 13th June 2014, 1:12 PM

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## State Brewster's law.

Asked by Topperlearning User 13th June 2014, 12:56 PM

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

Asked by Topperlearning User 13th June 2014, 12:51 PM

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## 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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## Two polaroids are set in crossed positions. A third polaroid is placed between the two making an angle  with the pass axis of the first polaroid. Write the expression of the intensity of light transmitted from the second polaroid. In what orientation will the transmitted intensity be (i) minimum and (ii) maximum?

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

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## If the angle between the pass axes of a polariser and analyser is 45Âº. 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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## An incident beam of light of intensity Iº is made to fall on a Polaroid A. Another Polaroid B is so oriented with respect to A that there is no light emergeing out of B. A third Polaroid C is now introduced mid-way between A and B. What is the intensity of light now between      (i) A and C?   (ii) C and B? Give reasons for your answer.

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

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## 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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## 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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## What is plane polarized light?

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