BCECE Medical BCECE Medical Solved Papers-2005

  • question_answer
    A single slit is used to observe diffraction pattern with red light. On replacing the red light with violet light the diffraction pattern would:

    A)  remain unchanged

    B)  become narrower

    C)  become broader

    D)  disappear

    Correct Answer: B

    Solution :

    In diffraction pattern, fringe width is proportional to L We know that wavelength of violet light is less than that of red light, so on replacing red light with violet light, diffraction pattern would Become narrower.


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