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

  • question_answer
    A diffraction is obtained by using a beam of red light. What will happen if the red light is replaced by the blue light [KCET 2000; BHU 2001]

    A)            Bands will narrower and crowd full together

    B)            Bands become broader and further apart

    C)            No change will take place

    D)            Bands disappear

    Correct Answer: A

    Solution :

                       Band widthµ l, Q lblue < lred, hence for blue light the diffraction bands becomes narrower and crowded together.


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