A) \[\sin \theta \ge \frac{8}{9}\]
B) \[\frac{2}{3}<\sin \theta <\frac{8}{9}\]
C) \[\sin \theta \le \frac{2}{3}\]
D) \[\frac{1}{2}<\sin \theta <1\]
Correct Answer: A
Solution :
[a] The phenomenon of total internal reflection takes place during reflection at P.
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