A) \[{{I}_{0}}\]
B) \[{{I}_{0}}/2\]
C) \[{{I}_{0}}/4\]
D) \[{{I}_{0}}/8\]
Correct Answer: C
Solution :
Intensity of light is halved upon passage through first polaroid. Using Malus? Law: \[I=\frac{{{I}_{0}}}{2}{{\cos }^{2}}\theta \] \[\theta =45{}^\circ \](The angle between the polarization axes of the polaroids) \[\therefore \] \[{{I}_{0}}=\frac{{{I}_{0}}}{2}{{\left( \frac{1}{\sqrt{2}} \right)}^{2}}=\frac{{{I}_{0}}}{4}\]You need to login to perform this action.
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