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The distance between the two slits illum...

The distance between the two slits illuminated by a monochromatic source of ligth in Young's experiment for interference is 0.2 cm. Interference fringes of fringes width 0.295 mm is formed on the screen kept at a distance of 1 m from the slits. Determine the wavelength of light .

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The correct Answer is:
`58 xx 10 ^(-6)`cm
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The distance between the two slits in Young's double slit experiment is 0.02 cm. Interference fringes for light of wavelength 6000 Å are formed on the screen at a distance of 80 cm from the slits. Determine the distance of the fifth bright fringe.

The distance between the two slits illuminated by a monochromatic source of light in Young's experiment for interference is 0.1 mm. Distance of the screen from the plane of the slits is 1 m. The distance between the central maximum point to the first maximum point is 0.589 mm. Determine the wavelength of light.

Knowledge Check

  • In Young's double slit experiment the slits apart by 3 mm are illuminated with a source of monochromatic light of wavelength 6000 Å. Interference fringes are obtained on a screen at a distance of 1 m from the slits . The width of the fringe will be

    A
    0.15 mm
    B
    0.2 mm
    C
    0.29 mm
    D
    0.12 mm

  • In Young's double slit experiment the slits apart by 3 mm are illuminated with a source of monochromatic light of wavelength 6000 Å. Interference fringes are obtained on a screen at a distance of 1 m from the slits . If the whole experimental arrangement is immersed in water the fringe width will be .

    A
    0.15 mm
    B
    0.20 mm
    C
    0.29 mm
    D
    0.12 mm

  • In Young's double slit experiment the distance between the slits is d. An interference fringe is obtained on a screen placed at a distance D from the slits . A dark band is noticed just opposite to one of the slits. The wavelength of the light used is

    A
    `D^(2)/(2d)`
    B
    `d^(2)/(2d)`
    C
    `D^(2)/(d)`
    D
    `d^(2)/(D)`

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    The angular width of central maximum in a single slit diffraction pattern is 30^(@) . The width of the slit is 1 mu m. the slit is illuminated by monochromatic plane waves. If another slit of same width is made near it, Young's fringes can be observer on a screen placed at a distance 50 cm from the slits. If the observed fringe width is 1 cm, what is slit separation distance? (i.e., distance between the centres of each slit )

    The angular width of the central maximum in a single slit diffraction pattern is 60^(@) . The width of the slit is 1 mu m. The slit is illuminated by monochromatic plane waves. If another slit of same width is made near it, Young's fringes can be observed on a screen placed at a distance 50 cm from the slits. If the observed fringe width is 1 cm, what is slit separation distance? (i.e. distance between the centres of each slit)

    Two straight and parallel slits 0.4 mm apart , are illuminated by a source of monochromatic light. Interfer- ence patter of fringe width 0.5 mm is produced 40 cm away from the slits . Find the wavelength of the light used.

    A beam of monochromatic light of wavelength 500 nm falls on two parallel slits. The distance between the slits is 0.15 mm. Determine the width of the interference fringes in mm unit on a screen placed at a distance of 1.5 m from the plane of the slits.

    If white light is used instead of monochromatic light in Young's double slit experiment then what change in the fringe width be observed ?

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