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If 2 slits in young's double slit experiment are of unequal width what will happen??
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If 2 slits in young's double slit experiment are of unequal width what...
Effect of Unequal Width of Slits in Young's Double Slit Experiment



  • Young's double slit experiment is a classic experiment in optics which demonstrates the wave nature of light.

  • The experiment consists of a light source, a screen, and two narrow slits.

  • When the light passes through the slits, it diffracts and interferes with itself, creating a pattern of bright and dark fringes on the screen.

  • If the two slits are of equal width, the interference pattern on the screen will be symmetrical with a central bright fringe and alternating dark and bright fringes on either side of the central fringe.

  • If the two slits are of unequal width, the interference pattern will be affected in several ways:


    • Shift in the Position of the Fringes: The interference pattern will be shifted towards the wider slit. This is because the wider slit allows more light to pass through, causing the wavefronts to expand more than the wavefronts passing through the narrower slit. As a result, the interference pattern is shifted towards the wider slit.

    • Change in the Intensity of the Fringes: The intensity of the fringes will be different for the two slits. The fringe corresponding to the wider slit will be brighter than the fringe corresponding to the narrower slit, as more light passes through the wider slit.

    • Change in the Width of the Fringes: The width of the fringes will also be affected. The fringe corresponding to the wider slit will be wider than the fringe corresponding to the narrower slit, as the wavefronts passing through the wider slit expand more than the wavefronts passing through the narrower slit.




Conclusion



  • In conclusion, if the two slits in Young's double slit experiment are of unequal width, the interference pattern will be shifted towards the wider slit, and the intensity and width of the fringes will also be affected.

  • This shows that the interference pattern is sensitive to the parameters of the experiment, and any changes in these parameters can affect the pattern of fringes on the screen.

Community Answer
If 2 slits in young's double slit experiment are of unequal width what...
if width differs then passage of wavelets on the screen will be different as a result the intensity of both the frings will be different as per formula w1/w2=i1/i2
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Read the following text and answer the following questions on the basis of the same: In one of his experiments on interference, August Jean Fresnel used a biprism to induce interference between two beams. He split a diverging beam of light into two parts by using the biprism to refract them. This resulted in two split beams which acted as if they were from two coherent sources and which therefore interfered with each other. A Fresnel Biprism is a thin double prism placed base to base and have very small refracting angle ( 0.5°). This is equivalent to a single prism with one of its angle nearly 179° and other two of 0.5° each. In Young’s double Slits experiment, a single source is split in two coherent sources. For the Young’s slits experiment, we must approximate that the slits act as point sources. This however is not the case, since the slits have finite width. In this way, it gives rise to unwanted diffraction effects that causes errors. The Fresnel biprism experiment overcomes this problem. A Fresnel biprism is a variation of Young’s Slits experiment. When monochromatic light through a narrow slit falls on biprism that divides it into two components. One of these component is refracted from upper portion of biprism and the other one refracted through lower portion. Two virtual coherent sources formed from the original source. In this case, two virtual coherent sources are point sources and replace slits in Young’s experiment. Q. What is the difference between the coherent sources produced by Young’s double slit arrangement and Fresnel biprism?

If 2 slits in young's double slit experiment are of unequal width what will happen??
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