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EAMCET Medical EAMCET Medical Solved Paper-1999

  • question_answer
    Two sources of light are said to be coherent, if light waves produced by them have:

    A)  the same wavelength

    B)  the same wavelength and constant phase difference

    C)  the same amplitude

    D)  the same wavelength and same amplitude

    Correct Answer: B

    Solution :

                     Coherent sources are those sources whose initial phase difference remains constant and have the same frequency or wave length.                                    


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