Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2011

  • question_answer
    Two coherent sources must have the same

    A)  amplitude                         

    B)  phase difference

    C)  frequency                         

    D)  Both [b] and [c]

    Correct Answer: B

    Solution :

    To observe interference in light, the phase difference between the waves emerging from the coherent sources of light must remain constant. If there be any phase change in one wave, then exactly the same phase change must occur in the other wave.


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