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A narrow slit of width 0.025 mm is illum...

A narrow slit of width 0.025 mm is illuminated by a parallel beam of light. The diffraction pattern is observed through a telescope. It is found that to reach the first minimum, the telescope has to be rotated through `1^(@)24`' from the direction of the direct ray. Calculate the wavelength of light used.
`[6100 Å]`

Answer

Step by step text solution for A narrow slit of width 0.025 mm is illuminated by a parallel beam of light. The diffraction pattern is observed through a telescope. It is found that to reach the first minimum, the telescope has to be rotated through 1^(@)24' from the direction of the direct ray. Calculate the wavelength of light used. [6100 Å] by PHYSICS experts to help you in doubts & scoring excellent marks in Class 12 exams.

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Knowledge Check

  • A single slit of width 0.1 mm is illuminated by a parallel beam of light of wavelength 6000 Å and diffraction bands are observed on a screen 0.5 m from the slit. The distance of the third dark band from the central bright band is:

    A
    3 mm
    B
    9 mm
    C
    4.5 mm
    D
    1.5 mm

  • A single slit of width 0.1mm is illuminated by parallel light of wavelength 6000Å, and diffraction bands are observed on a screen 40cm from the slit. The distance of third dark band from the central bright band is:

    A
    7.2 mm
    B
    3.6 mm
    C
    2.4 mm
    D
    0.6 mm

  • When a monochromatic light passes through a slit 0.2 mm wide and falls on a screen 3.5 m away, the first minimum of the diffraction pattern is 9.1 mm from the centre of the central maximum. The wavelength of the light is

    A
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    B
    `4000 Å`
    C
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    D
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