J & K CET Engineering J and K - CET Engineering Solved Paper-2009

  • question_answer
    If the width of the slit in single slit diffraction experiment is doubled, then the central maximum of diffraction pattern becomes

    A)  broader and brighter

    B)  sharper and brighter

    C)  sharper and fainter

    D)  broader and fainter

    Correct Answer: D

    Solution :

    As the slit width increase (relative to wavelength) the width of the central diffraction maxima decreases, ie, the light undergoes less flaring by the slit. The secondary maxima also decreases in width (and becomes weaker).


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