Q. A polaroid is placed at $45{^\circ}$ to an incoming light of intensity $I_{0}$. Now the intensity of light passing through polaroid after polarization would be
A) $I_{0}$
B) $I_{0}/2$
C) $I_{0}/4$
D) Zero
Explanation
(b) $I = I_{0}\cos^{2}{\theta = I_{0}\cos^{2}{45 = \frac{I_{0}}{2}}}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.