Q. When an unpolarized light of intensity $I_{0}$ is incident on a polarizing sheet, the intensity of the light which does not get transmitted is
A) $\frac{1}{2}I_{0}$
B) $\frac{1}{4}I_{0}$
C) Zero
D) $I_{0}$
Explanation
(a) $I = I_{0}\cos^{2}\theta$
Intensity of polarized light = $\frac{I_{0}}{2}$
$\therefore$ Intensity of untransmitted light = $I_{0} - \frac{I_{0}}{2} = \frac{I_{0}}{2}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.