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NEET Sample Paper NEET Sample Test Paper-47

  • question_answer
    Light from two coherent sources of the same amplitude A and wavelength \[\lambda \] illuminates the screen. The intensity of the central maxima is L. If the sources were incoherent, the intensity at the same point will be:

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

    B) \[2{{I}_{o}}\]    

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

    D) \[\frac{{{I}_{o}}}{2}\]

    Correct Answer: D

    Solution :

    The rays of light from two coherent sources superimpose each other an the screen forming alternate maxima (maximum intensity y and minima (intensity zero). If the non coherent sources superimpose/ there will be no maxima and minima, instead the intensity will be -2- throughout.


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