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WB JEE Medical WB JEE Medical Solved Paper-2006

  • question_answer
    If Youngs double slit experiment is performed in water instead of air, then :

    A)  no fringes would be seen

    B)  fringe width would decrease

    C)  fringe width would increase

    D)  fringe width would remain unchanged

    Correct Answer: B

    Solution :

                     Fringe width, \[\beta =\frac{D\lambda }{d}\] or               \[\beta \propto \lambda \] If the experiment is performed in water, wavelength \[\lambda \] decreases, so, fringe width also  decreases.


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