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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]

APPEARS IN

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

संबंधित प्रश्‍न

How does the angular separation between fringes in single-slit diffraction experiment change when the distance of separation between the slit screens is doubled?


Answer the following question.
Describe any two characteristic features which distinguish between interference and diffraction phenomena. Derive the expression for the intensity at a point of the interference pattern in Young's double-slit experiment.


Answer in brief:

Explain what is the optical path length. How is it different from actual path length?


Why two light sources must be of equal intensity to obtain a well-defined interference pattern?


What is interference?


Explain constructive and destructive interference with the help of a diagram?


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


What is phase of a wave?


How does wavefront division provide coherent sources?


In Young’s double-slit experiment, 62 fringes are seen in the visible region for sodium light of wavelength 5893 Å. If violet light of wavelength 4359 Å is used in place of sodium light, then what is the number of fringes seen?


The interference pattern is obtained with two coherent light sources of intensity ratio n. In the interference pattern, the ratio `("I"_"max" - "I"_"min")/("I"_"max" + "I"_"min")` will be ______


In Young's double-slit experiment, in an interference pattern, a second minimum is observed exactly in front of one slit. The distance between the two coherent sources is 'd' and the distance between source and screen is 'D'. The wavelength of the light source used is ______


If the monochromatic source in Young's double slit experiment is white light, then ____________.


Band width for red light of wavelength 6600 Å is 0.42 mm. If red Light is replaced by blue light of wavelength 4400 Å, then the change m bandwidth will be ____________.


The distance between the first and ninth bright fringes formed in a biprism experiment is ______.

(`lambda` = 6000 A, D = 1.0 m, d = 1.2 mm)


A double slit experiment is immersed in water of refractive index 1.33. The slit separation is 1 mm, distance between slit and screen is 1.33 m. The slits are illuminated by a light of wavelength 6300 Å. The fringe width 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 ______.


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