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CBSE - XII Science - Physics - Wave Optics
Please refer to the uploaded image for the doubt
Asked by arjunsah797
15th May 2022,
1:18 PM
CBSE - XII Science - Physics - Wave Optics
Explain Polarisation by scattering? (4marks question ) So please provide accurate answer
Asked by ykadiya99
18th May 2020,
6:26 PM
CBSE - XII Science - Physics - Wave Optics
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
CBSE - XII Science - Physics - Wave Optics
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
CBSE - XII Science - Physics - Wave Optics
Draw an intensity vs angle between the plans of transmission of polarizer and analyzer
Asked by nehanithin25
17th August 2018,
1:52 PM
CBSE - XII Science - Physics - Wave Optics
pl explain polarisation by reflection with diagram
Asked by Rajeev
21st February 2016,
11:59 PM
CBSE - XII Science - Physics - Wave Optics
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
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
CBSE - XII Science - Physics - Wave Optics
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
CBSE - XII Science - Physics - Wave Optics
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
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
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
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
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
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
CBSE - XII Science - Physics - Wave Optics
Two polaroids are placed 90º 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
CBSE - XII Science - Physics - Wave Optics
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
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
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
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
CBSE - XII Science - Physics - Wave Optics
Briefly explain polarisation by scattering?
Asked by Topperlearning User
13th June 2014,
1:12 PM
CBSE - XII Science - Physics - Wave Optics
State Brewster's law.
Asked by Topperlearning User
13th June 2014,
12:56 PM
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
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
CBSE - XII Science - Physics - Wave Optics
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?
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
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
CBSE - XII Science - Physics - Wave Optics
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
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
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
CBSE - XII Science - Physics - Wave Optics
What is plane polarized light?
Asked by Topperlearning User
4th June 2014,
1:23 PM
