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In Young’S Double Slit Experiment, Show Graphically How Intensity of Light Varies with Distance - Physics (Theory)

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प्रश्न

In Young’s double slit experiment, show graphically how the intensity of light varies with distance

उत्तर

I - Intensity

d - Distance

The above graph shows the intensity verses distance. The intensity of light does not vary with the distance.

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2017-2018 (March) Set 1

संबंधित प्रश्न

In Young' s experiment the ratio of intensity at the maxima and minima . in the interference pattern is 36 : 16. What is the ratio of the widths of the two slits?


In Young’s experiment, the ratio of intensity at the maxima and minima in an interference
pattern is 36 : 9. What will be the ratio of the intensities of two interfering waves?


If Young's double slit experiment is performed in water, _________________ .


A plate of thickness t made of a material of refractive index µ is placed in front of one of the slits in a double slit experiment. (a) Find the change in the optical path due to introduction of the plate. (b) What should be the minimum thickness t which will make the intensity at the centre of the fringe pattern zero? Wavelength of the light used is \[\lambda.\] Neglect any absorption of light in the plate.


In a Young's double slit interference experiment, the fringe pattern is observed on a screen placed at a distance D from the slits. The slits are separated by a distance d and are illuminated by monochromatic light of wavelength \[\lambda.\] Find the distance from the central point where the intensity falls to (a) half the maximum, (b) one-fourth the maximum.


In Young’s double slit experiment, what is the effect on fringe pattern if the slits are brought closer to each other?


In Young’s double slit experiment, what should be the phase difference between the two overlapping waves to obtain 5th dark band/fringe on the screen?


The central fringe of the interference pattern produced by the light of wavelength 6000 Å is found to shift to the position of the fourth bright fringe after a glass plate of refractive index 1.5 is introduced in the path of one of the beams. The thickness of the glass plate would be ______.


  • Assertion (A): In Young's double slit experiment all fringes are of equal width.
  • Reason (R): The fringe width depends upon the wavelength of light (λ) used, the distance of the screen from the plane of slits (D) and slits separation (d).

In Young's double-slit experiment, the screen is moved away from the plane of the slits. What will be its effect on the following?

  1. The angular separation of the fringes.
  2. Fringe-width.

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