NEET Sample Paper NEET Sample Test Paper-51

  • question_answer Two polaroids have their axes at an angle of \[60{}^\circ \] in between. If Io is intensity of unpolarised light falling on first Polaroid then that of emerging light from the second Polaroid is-

    A) \[0.125\text{ }{{I}_{0}}\]                     

    B) \[0.25\,\,{{I}_{0}}\]

    C) \[0.375\text{ }{{I}_{0}}\]                     

    D) \[0.50\text{ }{{I}_{0}}\]

    Correct Answer: A

    Solution :

    Intensity of finally emerged light is \[=\,\,\frac{{{I}_{0}}}{2}{{\cos }^{2}}60{}^\circ \,\,=\,\,\frac{{{I}_{0}}}{8}\]

adversite


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

Free
Videos