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 :
Using the formula \[{{\mu }_{prism}}=\frac{{{\mu }_{liquid}}}{{{\mu }_{prism}}}=\frac{1.32}{1.56}=\frac{11}{13}\] ?(1) Now the condition for total internal reflection, occur when \[\sin \theta \ge \mu \] So, \[\sin \theta \ge \frac{11}{13}\]
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