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To prodce inteference fringes in Young' ...

To prodce inteference fringes in Young' s double slit experiment light consisting of two wavelengths of 6500 Å and 5200 Å is used.
(i) Determine the distance of the third maxima from the central maxima for light of wavelength 6500 Å .
(ii) At what minimum distance from the central maxima will the bright points (maxima) for two waves superpose?
Given that distance between the two slits is 2 mm and the distance of the screen from the plane of the slits is 120 cm.

Text Solution

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The correct Answer is:
1.17 mm 1.56 mm
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Knowledge Check

  • If young' s double slit experiment is performed using white light, then

    A
    the central fringe will be white
    B
    no fringe will be completely dark
    C
    the fringe adjacent to the central one will be red
    D
    the fringe adjacent to the central one will be violet

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

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