The light intensity gets through a plane polarizer will be
[tex]I=\dfrac{I_o}{2}[/tex]
What is polarization?
The polarization of light is defined as when a light coming from a source it oscillates in all perpendicular directions so when this light is passed through a polarizer then the light will oscillate only in one perpendicular direction other waves are blocked.
According to the law of Malus, the intensity of transmitted light after first polarizer is
[tex]I=I_oCos^2\phi[/tex]
where, Ф be the angle between the axis of polarizer and analyser.
As the mean value of Cos^Ф is 1/2, so the intensity of light transmitted from the first polarizer is
[tex]I=\dfrac{I_o}{2}[/tex]
Thus the light intensity gets through a plane polarizer will be
[tex]I=\dfrac{I_o}{2}[/tex]
To know more about polarization follow
https://brainly.com/question/1273369
