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What is Young’s Double Slit Experiment?

Important Questions on Wave Optics

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Physics>Optics>Wave Optics>Young’s Double Slit Experiment
The interference pattern is obtained with two coherent light sources of intensity ratio, n. In the interference pattern, the ratio, Imax−IminImax+Imin will be
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Physics>Optics>Wave Optics>Young’s Double Slit Experiment
In a Young's double slit experiment, the slits are placed 0.320 mm apart. Light of wavelength λ=500 nm is incident on the slits. The total number of bright fringes that are observed in the angular range -30o≤θ≤30o is:
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Physics>Optics>Wave Optics>Young’s Double Slit Experiment
The distance between two coherent sources is 1 mm. The screen is placed at a distance of 1 m from the sources. If the distance of the third bright fringe is 1.2 mm from the central fringe, the wavelength of light used is
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Physics>Optics>Wave Optics>Young’s Double Slit Experiment
In Young's double-slit experiment, in an interference pattern, the second minimum is observed exactly in front of one slit. The distance between the slits is d and the distance between source and screen is D. The wavelength of the light source used is
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Physics>Optics>Wave Optics>Young’s Double Slit Experiment
In a Young's double-slit experiment, the slits are separated by 0.28 mm and the screen is placed 1.4 m away. The distance between the central bright fringe and the fourth bright fringe is measured to be 1.2 cm. Determine the wavelength of light used in the experiment.
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Physics>Optics>Wave Optics>Young’s Double Slit Experiment
In a Young's double slit experiment, slits are separated by 0.5 mm, and the screen is placed 150 cm away. A beam of light consisting of two wavelengths, 650 nm and 520 nm, is used to obtain interference fringes on the screen. The least distance from the common central maximum to the point where the bright fringes due to both the wavelengths coincide is:
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Physics>Optics>Wave Optics>Young’s Double Slit Experiment
In a double-slit experiment, the two slits are 1 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 a single-slit pattern?
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Physics>Optics>Wave Optics>Young’s Double Slit Experiment
In Young’s double-slit experiment, the distance between the two identical slits is 6.1 times larger than the slit width. Then the number of intensity maxima observed within the central maximum of the single-slit diffraction pattern is :
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Physics>Optics>Wave Optics>Young’s Double Slit Experiment
Obtain the formula for the angular width of central maxima of the diffraction pattern of light by a single slit by drawing a diagram. Draw also the intensity distribution diagram of diffraction pattern.
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Physics>Optics>Wave Optics>Young’s Double Slit Experiment
A Young's double slit experiment apparatus has slits separated by 0.2 mm and a screen 60 cm away from the slits. The whole apparatus is immersed in a liquid medium of refractive index 119 and the slits are illuminated with green light (λ=550 nm in vacuum). Find the fringe width of the pattern formed on the screen.
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Physics>Optics>Wave Optics>Young’s Double Slit Experiment
In the Young's double slit experiment using a monochromatic light of wavelength λ , the path difference ( in terms of an integer n ) corresponding to any point having half the peak intensity is
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Physics>Optics>Wave Optics>Young’s Double Slit Experiment
If the source of light used in a Young's double slit experiment is changed from red to violet:
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Physics>Optics>Wave Optics>Young’s Double Slit Experiment
Young's double slit experiment is first performed in air and then in a medium other than air. It is found that 8th bright fringe in the medium lies where 5th dark fringe lies in air. The refractive index of the medium is nearly
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Physics>Optics>Wave Optics>Young’s Double Slit Experiment
Electrons accelerated from rest by an electrostatic potential are collimated and sent through a Young's double slit experiment. The fringe width is ω. If the accelerating potential is doubled, then the width is now close to:
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Physics>Optics>Wave Optics>Young’s Double Slit Experiment

Using monochromatic light of wavelength λ , an experimentalist sets up the Young's double slit experiment in three ways as shown.
If she observes that y⁡ = β ′ , the wavelength of light used is :

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Physics>Optics>Wave Optics>Young’s Double Slit Experiment
In a double slit experiment, when light of wavelength 400 nm was used, the angular width of the first minima formed on a screen placed 1 m away was found to be 0.2°. What will be the angular width of the first minima, if the entire experimental apparatus is immersed in water? μwater=43
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Physics>Optics>Wave Optics>Young’s Double Slit Experiment
A light source, which emits two wavelengths λ1=400 nm and λ2=600 nm , is used in a Young's double slit experiment. If recorded fringe widths for λ1 and λ2 are β1 and β2 and the number of fringes for them within a distance y on one side of the central maximum are m1 and m2 , respectively, then
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Physics>Optics>Wave Optics>Young’s Double Slit Experiment
Consider a Young's double slit experiment as shown in figure. What should be the slit separation d in terms of wavelength λ such that the first minima occurs directly in front of the slit (S1) ?

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Physics>Optics>Wave Optics>Young’s Double Slit Experiment

If β is the bandwidth, in Young's double slit experiment, the distance between the first dark band and sixth bright band is:

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Physics>Optics>Wave Optics>Young’s Double Slit Experiment
In a Young's double slit experiment slit separation 0.1 mm, one observes a bright fringe at angle 140 rad by using light of wavelength λ1. When the light of wavelength λ2 is used a bright fringe is seen at the same angle in the same set up. Given that λ1 and λ2 are in visible range 380 nm to 740 nm, their values are: