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

  • question_answer
    If Fresnel?s biprism experiment as held in water inspite of air, then what will be the effect on fringe width [RPMT 1997, 98]

    A)            Decrease

    B)            Increase

    C)            No effect

    D)            None of these

    Correct Answer: A

    Solution :

               \[\because \] \[\beta \propto \lambda \Rightarrow {{\lambda }_{w}}<{{\lambda }_{a}}\] so \[{{\beta }_{w}}<{{\beta }_{a}}\]


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