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What is intensity (or) amplitude division? - Physics

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प्रश्न

What is intensity (or) amplitude division?

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उत्तर

  1. If we allow light to pass through a partially silvered mirror (beam splitter), both reflection and refraction take place simultaneously.
  2. As the two light beams are obtained from the same light source, the two divided light beams will be coherent beams.
  3. They will be either in-phase or at constant phase differences.
  4. Instruments like Michelson’s interferometer, FabrayPerrot etalon work on this principle.

    Intensity or amplitude division
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पाठ 7: Wave Optics - Evaluation [पृष्ठ १०३]

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सामाचीर कलवी Physics - Volume 1 and 2 [English] Class 12 TN Board
पाठ 7 Wave Optics
Evaluation | Q 13. | पृष्ठ १०३

संबंधित प्रश्‍न

Why are multiple colours observed over a thin film of oil floating on water? Explain with the help of a diagram.


Two coherent sources whose intensity ratio is 25:1 produce interference fringes. Calculate the ratio of amplitudes of light waves coming from them.


Describe geometry of the Young’s double slit experiment with the help of a ray diagram. What is fringe width? Obtain an expression of it. Write the conditions for constructive as well as destructive interference. 


One of Young’s double slits is covered with a glass plate as shown in figure. The position of central maximum will,


Obtain the relation between phase difference and path difference.


How does wavefront division provide coherent sources?


How do source and images behave as coherent sources?


Two independent monochromatic sources cannot act as coherent sources, why?


The ratio of maximum and minimum intensities in an interference pattern is 36 : 1. What is the ratio of the amplitudes of the two interfering waves?


The light waves from two independent monochromatic light sources are given by, y1 = 2 sin ωt and y2 = 3 cos ωt. Then the correct statement is ____________.


In a biprism experiment, D = 1 m, `lambda` = 6000 Å. When a convex lens is interposed between the biprism ru1d the eyepiece, then the distance between the images of the slits given by the Jens at two positions are 1.5 mm and 6.0 mm. The fringe width will be ______.


If the two slits in Young's double slit experiment have width ratio 9 : 1, the ratio of maximum to minimum intensity in the interference pattern is ______.


In the biprism experiment, the fringe width is 0.4 mm. What is the distance between the 4th dark band and the 6th bright band on the same side? 


In a biprism experiment, monochromatic light of wavelength (λ) is used. The distance between two coherent sources is kept constant. If the distance between slit and eyepiece (D) is varied as D1, D2, D3, and D4, the corresponding measured fringe widths are z1, z2, z3, and z4 then ______ 


In Young's double slit experiment, for wavelength λ1 the nth bright fringe is obtained at a point P on the screen. Keeping the same setting, source of light is replaced by wavelength λ2 and now (n + 1)th bright fringe is obtained at the same point P on the screen. The value of n is ______.


What is meant by Constructive interference?


Two coherent sources P and Q produce interference at point A on the screen where there is a dark band which is formed between 4th bright band and 5th bright band. Wavelength of light used is 6000 Å. The path difference between PA and QA is ______.


In a double-slit experiment, the optical path difference between the waves coming from two coherent sources at a point P on one side of the central bright is 7.5 µm and that at a point Q on the other side of the central bright fringe and 1.8 µm. How many bright and dark fringes are observed between points P and Q if the wavelength of light used is 600 nm?


With a neat labelled ray diagram explain the use of Fresnel's biprism to obtain two coherent sources.


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