Q. Ordinary light incident on a glass slab at the polarising angle, suffers a deviation of$22{^\circ}$. The value of the angle of refraction in glass in this case is
A) $56{^\circ}$
B) $68{^\circ}$
C) $34{^\circ}$
D) $22{^\circ}$
Explanation
(c) Deviation=$i_{p} - r = 20{^\circ}$
Also, $\ i_{p} = r = 90{^\circ}$
Solve to get $r = 34{^\circ}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.