CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2008

  • question_answer
    An unpolarised beam of intensity \[{{I}_{0}}\] falls on a polarold. The intensity of the emergent light is

    A)  \[\frac{{{I}_{0}}}{2}\]                                    

    B)  \[{{I}_{0}}\]

    C)  \[\frac{{{I}_{0}}}{4}\]                                    

    D)  Zero

    Correct Answer: A

    Solution :

    If an unpolarised light is converted into plane polarised light by passing through a polaroid its intensity becomes half.


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