Q. When unpolarised light beam is incident from air onto glass $(n = 1.5)$ at the polarizing angle
A) Reflected beam is polarized 100 percent
B) Reflected and refracted beams are partially polarized
C) The reason for (a) is that almost all the light is reflected
D) All of the above
Explanation
(a) According to Brewster’s law, when a beam of ordinary light ($i.e.,$ unpolarised) is reflected from a transparent medium (like glass), the reflected light is completely plane polarized at certain angle of incidence called the angle of polarization
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.