A) \[n<\frac{1}{\sqrt{2}}\]
B) \[n<\sqrt{2}\]
C) \[n>\sqrt{\frac{1}{\sqrt{2}}}\]
D) \[n<\sqrt{2}\]
Correct Answer: B
Solution :
For total internal reflection to take place, \[{{\theta }_{c}}<{{45}^{o}}\]or\[\sin {{\theta }_{c}}<\frac{1}{\sqrt{2}}\] \[\Rightarrow \frac{1}{n}<\frac{1}{\sqrt{2}}\,\,\therefore n>\sqrt{2}\]You need to login to perform this action.
You will be redirected in
3 sec