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Explain what is meant by diffraction of light. Describe a simple experiment to demonstrate diffraction at a single slit.

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Knowledge Check

  • Central fringe obtained in diffraction pattern due to a single slit-

    A
    is of minimum intensity
    B
    is of maximum intensity
    C
    intensity does not depend upon slit width
    D
    none of the above

  • What will be the angle of diffraction for the first secondary maximum due to diffraction at a single slit of width 0.5 mm and using light off 5000 Å?

    A
    `1.5xx10^(-4)` radian
    B
    `1.5xx10^(-3)` radian
    C
    `0.75xx10^(-3)` radian
    D
    0.001 radian

  • The diffraction fringes obtained by a single slit are of

    A
    unequal width
    B
    equal width
    C
    equal width and equal intensity.
    D
    unequal width and unequal intensity.

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    What is meant by diffraction of light? Show graphically the relative intensity distribution for a single-slit diffraction pattern as a function of sin theta and write the condition for the first secondary minimum of diffraction pattern in terms of path difference .

    What is diffraction of light ? Explain its two types .

    Angular width of central maximum in diffraction at a single slit is……………. .

    Draw an intensity distribution graph for diffraction due to a single slit.

    Explain two features to distinguish between the interference pattern in Young's double slit experiment with the diffraction pattern obtained due to a single slit.

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