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JEE Main & Advanced Physics Wave Optics / तरंग प्रकाशिकी Question Bank Polarisation of Light

  • question_answer
    A polaroid is placed at 45o to an incoming light of intensity \[{{I}_{0}}\]. Now the intensity of light passing through polaroid after polarization would be                                       [CPMT 1995]

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

    B)            \[{{I}_{0}}/2\]

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

    D)            Zero

    Correct Answer: B

    Solution :

               \[I={{I}_{0}}{{\cos }^{2}}\theta \]= I0 cos2 45 \[=\frac{{{I}_{0}}}{2}\]


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