A) \[\theta \ge \text{12}0{}^\circ \]
B) \[\theta \ge \text{9}0{}^\circ \]
C) \[\theta \le \text{12}0{}^\circ \]
D) None of the above
Correct Answer: A
Solution :
For the given condition, no successive reflection takes place. So, the number of images will be\[n\le 2\] \[n-1\le 2\] \[n\le 3\] \[\frac{{{360}^{\circ }}}{\theta }\le 3\] \[120\le 3\] \[\theta \ge {{120}^{\circ }}\]
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