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

  • question_answer
    In a diffraction pattern by a wire, on increasing diameter of wire, fringe width                                    [RPMT 1998]

    A)            Decreases

    B)            Increases

    C)            Remains unchanged

    D)            Increasing or decreasing will depend on wavelength

    Correct Answer: A

    Solution :

               \[\beta =\frac{\lambda .D}{d}\] where D = distance of screen from wire, d = diameter of wire


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