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JEE Main & Advanced Physics Wave Optics / तरंग प्रकाशिकी Question Bank Diffraction of Light

  • question_answer
    Red light is generally used to observe diffraction pattern from single slit. If blue light is used instead of red light, then diffraction pattern [RPMT 2001; BCECE 2005; CPMT 2005]

    A)            Will be clearer                     

    B)            Will contract

    C)            Will expanded                     

    D)            Will not be visualized

    Correct Answer: B

    Solution :

     \[{{\lambda }_{\text{Blue}}}<{{\lambda }_{\text{Red}}}\]. Therefore fringe pattern will contract because fringe width \[\propto \lambda \]


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