2. Sample Papers
  3. NEET

NEET Sample Paper NEET Sample Test Paper-82

  • question_answer
    Light from two coherent sources of the same amplitude A and wavelength\[\lambda \], illuminator the screen. The intensity of the central maximum is \[{{I}_{0}}\]. If the sources ivere incoherent, the intersity at the same point will be

    A)  \[4{{I}_{0}}\]                         

    B)  \[2{{I}_{0}}\]

    C)  \[{{I}_{0}}\]                           

    D)  \[\frac{{{I}_{0}}}{2}\]

    Correct Answer: D

    Solution :

    The rays of light from two coherent sources superimpose each other an the screen forming alternate maxima (with maximum intensity\[{{l}_{0}}\]) and minima (with intensity zero). If two non-coherent sources superimpose there will be no maxima and minima, instead the intensity will be \[\frac{{{l}_{0}}}{2}\] throughout.


You need to login to perform this action.
You will be redirected in 3 sec spinner