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

  • question_answer
    In Young's double slit interference experiment, the slit separation is made 3 fold. The fringe width becomes [CPMT 1982, 89]

    A)            1/3 times                               

    B)            1/9 times

    C)            3 times                                    

    D)            9 times

    Correct Answer: A

    Solution :

               \[\beta \propto \frac{1}{d}\]Þ If d becomes thrice, then \[\beta \] become becomes \[\frac{1}{3}\] times.


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