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A parallel light beam of wavelength 6000...

A parallel light beam of wavelength 6000Å passes through a slit 0.2 mm wide and forms a diffraction pattern on a screen 1.0 m away from the slit. Find the width of the central maximum in mm on the screen.

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Light of wavelength 5000Å is diffracted through a slit 0.2 mm wide and forms a diffraction pattern on a screen. It is found that the first minima lie at 5mm on either side of the central maximum on the screen. Determine the distance of the screen in metre from the slit.

A light of wavelength lambda falls on a narrow slit of width d.A diffraction fringe is formed on a screen placed at distance D from the slit. If the linear width of the central maximum equals to the width of the slit, will be the value of D?

Knowledge Check

  • Light of wavelength 6500 Å passes through a slit 0.1 cm wide and forms a diffraction pattern on a screen 1.8 m away. The width of the central maximum in mm is

    A
    2.5
    B
    1.32
    C
    2.34
    D
    1.72

  • Light of wavelength 6500 Å passes through a slit 0.1 cm wide and forms a diffraction pattern on a screen 1.8 m away. The width of the central maximum in mm when the apparatus is immersed water of refractive index (4)/(3) is

    A
    2.12
    B
    1.53
    C
    2.54
    D
    1.755

  • A beam of light of wavelength 900 nm from a distant source falls on a single slit 0.5 mm wide and the resulting diffraction pattern is observed on a screen 2 m away. The distance of first minimum on either side of central maximum is

    A
    2.4 mm
    B
    4.8 mm
    C
    9.6 mm
    D
    none of the these

    • Similar Questions

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    A monochromatic light of wavelength 500 nm is incident normally on a single slit of width 0.2 mm to produce a diffraction pattern. Find the angular width of the central maximum obained on the screen. Estimate the number of fringes obatined in Young's double slit experiment with fringe width 0.5 mm, which can be accommodated within the region of total angular spread of the central maximum due to single slit.

    A light of wave length 589 nm is passed through a single slit of width 1mm and a diffraction pattern is observed. Find angular width of central bright band.

    A single narrow slit of width 0.1 mm, is illuminated with a parallel beam of light of wavelength 600xx10^(-9) m . An diffraction fringe is formed on a screen 40 cm away from the slit. At what distance, will the third minimum band be formed from the central maximum band?

    A parallel beam of light of 500 nm falls on a narrow slit and the resulting diffraction pattern is observed on a screen 1 m away. It is observed that the first minimum is at a distance of 2.5 mm from the centre of the screen. Calculate the width of the slit.

    In Young's double slit experiment, light of wavelength lambda passes through the double-slit and forms interference fringes on a screen 1.2 m away. If the difference between 3rd order maximum and 3rd order minimum is 0.18 cm and the slits are 0.02 cm apart, then lambda is

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