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

  • question_answer An interference pattern was made by using red light. If the red light changes with blue light, the fringes will become [BHU 2001]

    A)            Wider                                      

    B)            Narrower

    C)            Fainter                                    

    D)            Brighter

    Correct Answer: B

    Solution :

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


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