JEE Main & Advanced Physics Wave Optics / तरंग प्रकाशिकी Question Bank Wave Nature and Interference of Light

  • question_answer
    If L is the coherence length and c the velocity of light, the coherent time is                                           [MP PMT 1996]          

    A)            cL   

    B)            \[\frac{L}{c}\]

    C)            \[\frac{c}{L}\]                      

    D)            \[\frac{1}{Lc}\]

    Correct Answer: B

    Solution :

               Coherent time \[=\frac{Coherence\ length}{Velocity\ of\ light}=\frac{L}{c}\]


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