A) \[\sin \theta \ge \frac{13}{11}\]
B) \[\sin \theta \ge \frac{11}{13}\]
C) \[\sin \theta \ge \frac{\sqrt{3}}{2}\]
D) \[\sin \theta \ge \frac{1}{\sqrt{2}}\]
Correct Answer: B
Solution :
For total internal reflection from surface BC \[\theta \ge C\Rightarrow \sin \theta \ge \sin C\] \[\Rightarrow \] \[\sin \theta \ge \left( \frac{1}{{{\,}_{l}}{{\mu }_{g}}} \right)\] \[\Rightarrow \] \[\sin \theta \ge \left( \frac{{{\mu }_{Liquid}}}{{{\mu }_{\Pr ism}}} \right)\] \[\sin \theta \ge \left( \frac{1.32}{1.56} \right)\Rightarrow \sin \theta \ge \frac{11}{13}\]You need to login to perform this action.
You will be redirected in
3 sec