Optics Question 890
Question: Unpolarised light is incident on a dielectric of refractive index $ \sqrt{3} $ . What is the angle of incidence if the reflected beam is completely polarised?
Options:
A) $ 30{}^\circ $
B) $ 45{}^\circ $
C) $ ~60{}^\circ $
D) $ 75{}^\circ $
Show Answer
Answer:
Correct Answer: C
Solution:
[c] $ \mu =\tan i $
$ \Rightarrow i={{\tan }^{-1}}(\mu )={{\tan }^{-1}}(\sqrt{3})=60^{o} $
