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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

A long narrow horizontal slit is paced 1 mm above a horizontal plane mirror. The interference between the light coming directly from the slit and that after reflection is seen on a screen 1.0 m away from the slit. Find the fringe-width if the light used has a wavelength of 700 nm.


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


Draw a neat labelled ray diagram of the Fresnel Biprism experiment showing the region of interference. 


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


In Young’s double slit experiment, the slits are 2 mm apart and are illuminated with a mixture of two wavelength λ0 = 750 nm and λ = 900 nm. What is the minimum distance from the common central bright fringe on a screen 2 m from the slits where a bright fringe from one interference pattern coincides with a bright fringe from the other?


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 ______


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


A thin transparent sheet is placed in front of a slit in Young's double slit experiment. The fringe width will ____________.


A wire of length 'L' and area of cross-section · A' is made of material of Young's modulus 'Y'. It is stretched by an amount 'x'. The work done in stretching the wire is ______.


In a double slit experiment, the two slits are 2 mm apart and the screen is placed 1 m away. A monochromatic light of wavelength 500 nm is used. What will be the width of each slit for obtaining ten maxima of double slit within the central maxima of single slit pattern?


In Young's double-slit experiment, an interference pattern is obtained on a screen by a light of wavelength 4000 Å, coming from the coherent sources S1 and S2 At certain point P on the screen, third dark fringe is formed. Then the path difference S1P - S2P in microns is ______.


In Young's double slit experiment the source is white light. One slit is covered with red filter and the other with blue filter. There shall be ____________.


Two coherent light sources of intensity ratio 'n' are employed in an interference experiment. The ratio of the intensities of the maxima and minima in the interference pattern is (I1 > I2).


If two waves represented by `"y"_1 = 3  "sin" omega "t"` and `"y"_2 = 5  "sin" (omega "t" + pi/3)` interfere at a point, then the amplitude of the resulting wave will be about ____________.


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 ______.


The interference pattern is obtained with two coherent light sources of intensity ratio 4 : 1. And the ratio `("I"_"max" - "I"_"min")/("I"_"max" + "I"_"min")` is `5/x`. Then the value of x will be equal to ______.


A ray of light AO in a vacuum is incident on a glass slab at an angle of 60° and refracted at an angle of 30° along OB as shown in the figure. The optical path length of the light ray from A to B is ______.


Describe Young's double-slit interference experiment.


In biprism experiment, the distance of 20th bright band from the central bright band is 1.2 cm. Without changing the experimental set-up, the distance of 30th bright band from the central bright band will be ______.


In biprism experiment, the 3rd dark band is formed opposite to one of the slits. The wavelength of light used is ______.

(D = distance between source and screen, d = distance between the two narrow slits)


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