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What is intensity (or) amplitude division?

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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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अध्याय 7: Wave Optics - Evaluation [पृष्ठ १०३]

APPEARS IN

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

संबंधित प्रश्न

When a drop of oil is spread on a water surface, it displays beautiful colours in daylight because of ______________ .


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.


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. 


What are coherent sources of light? 


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


Obtain the equation for bandwidth in Young’s double slit experiment.


Discuss the interference in thin films and obtain the equations for constructive and destructive interference for transmitted and reflected light.


Does diffraction take place at Young’s double-slit?


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?


Two identical light waves having phase difference 'Φ' propagate in same direction. When they superpose, the intensity of the resultant wave is proportional to ______.


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 ______.


In a Young's experiment, two coherent sources are placed 0.60 mm apart and the fringes are observed one metre away. If it produces the second dark fringe at a distance of 1 mm from the central fringe, the wavelength of monochromatic light used would be ____________.


If two light waves reaching a point produce destructive interference, then the condition of phase difference is ______


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 the biprism experiment, a source of monochromatic light is used for a certain distance between slit and eyepiece. When the distance between two virtual sources is changed from dA to dB, then the fringe width is changed from ZA to ZB. The ratio ZA to ZB is ______


Two coherent sources of intensities I1 and I2 produce an interference pattern on the screen. The maximum intensity in the interference pattern is ______


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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