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

  • question_answer
    In Young?s double-slit experiment the fringe width is b. If entire arrangement is placed in a liquid of refractive index n, the fringe width becomes                                                   [KCET 2003]

    A)            \[\frac{\beta }{n+1}\]      

    B)            nb

    C)            \[\frac{\beta }{n}\]           

    D)            \[\frac{\beta }{n-1}\]

    Correct Answer: C

    Solution :

               \[\beta =\frac{\lambda D}{d}\]and \[\lambda \propto \frac{1}{\mu }\]


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