JEE Main & Advanced Physics Wave Optics / तरंग प्रकाशिकी Question Bank Young's Double Slit Experiment and Biprism

  • question_answer
    In a Young's double slit experiment, the fringe width will remain same, if (D = distance between screen and plane of slits, d = separation between two slits and l =  wavelength of light used)                                            [Bihar MEE 1995]

    A)            Both l and\[D\]are doubled

    B)            Both d and\[D\]are doubled

    C)            D is doubled but d is halved

    D)            l is doubled but d is halved

    Correct Answer: B

    Solution :

               \[\beta =\frac{\lambda D}{d}\]


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