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RAJASTHAN PMT Rajasthan - PMT Solved Paper-2001

  • question_answer
    Usually light of red colour is used to see the diffraction pattern by single slit. If green light is used in place of red light, then diffraction pattern:

    A)  will become more bright

    B)  will become contract

    C)  will expand

    D)  will not be seen

    Correct Answer: B

    Solution :

    Wavelength of green light is less than that of red light. Therefore, fringe pattern will contracted because \[\beta \] (fringe width) \[\propto \,\lambda .\]


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