A) \[{{\sin }^{-1}}\left( \frac{9}{8} \right)\]
B) \[{{45}^{0}}\]
C) \[{{60}^{0}}\]
D) \[{{\sin }^{-1}}\left( \frac{8}{9} \right)\]
Correct Answer: D
Solution :
We know that for total internal reflection, the incident angle must be greater than or equal to the critical angle for which the refracted angle is \[\text{9}{{\text{0}}^{\text{o}}}\]You need to login to perform this action.
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