A) \[{{15}^{o}}\]
B) \[{{35}^{o}}\]
C) \[{{55}^{o}}\]
D) \[{{75}^{o}}\]
Correct Answer: C
Solution :
Intensity of unpolarized light, \[I=\frac{I}{2}{{\cos }^{2}}\theta \] \[\therefore \] \[\frac{I}{2}{{\cos }^{2}}\theta =\frac{I}{6}\] \[\Rightarrow \] \[{{\cos }^{2}}\theta =\frac{1}{3}\] \[\Rightarrow \] \[\cos \theta =\frac{1}{\sqrt{3}}\] \[\therefore \] \[\theta ={{55}^{o}}\]
You need to login to perform this action.
You will be redirected in
3 sec
