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प्रश्न
Explain with the help of a diagram how sunlight is polarised by scattering through atmospheric particles ?
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उत्तर
Unpolarised light scattering from air molecules shake its electrons perpendicular to the direction of the original ray. The scattered light therefore has a polarisation perpendicular to the original direction and none parallel to the original direction.
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संबंधित प्रश्न
Draw a graph showing the variation of intensity (I) of polarised light transmitted by an analyzer with the angle (θ) between polariser and analyzer.
Distinguish between polarized and unpolarized light. Does the intensity of polarized light emitted by a polaroid depend on its orientation? Explain briefly.
The vibration in a beam of polarized light make an angle of 60° with the axis of the polaroid sheet. What percentage of light is transmitted through the sheet?
Distinguish between unpolarised and linearly polarised light.
A partially plane polarised beam of light is passed through a polaroid. Show graphically the variation of the transmitted light intensity with angle of rotation of the polaroid ?
Explain briefly how sunlight is polarised by scattering through atmospheric particles.
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.
If the angle between the pass axis of polarizer and the analyser is 45º, write the ratio of the intensities of original light and the transmitted light after passing through the analyser.
Explain how an unpolarised light gets polarised when incident on the interface separating the two transparent media.
How will you identify with the help of an experiment whether a given beam of light is of polarized light or of unpolarized light?
Distinguish between unpolarized and linearly polarized light.
