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In Figure Shown,what Is the Smallest Incident Angle θ\theta i for the Beam to Undergo Total Internal Reflection at for the Beam

Question 63

Multiple Choice

In figure shown,what is the smallest incident angle θ\theta i for the beam to undergo total internal reflection at surface S of prism having an index of refraction of 1.5?  In figure shown,what is the smallest incident angle  \theta <sub>i</sub> for the beam to undergo total internal reflection at surface S of prism having an index of refraction of 1.5?   A) 56.1<sup> \circ </sup> B) 33.9<sup> \circ </sup> C) 50.9<sup> \circ </sup> D) 39.1<sup> \circ </sup>


A) 56.1 ∘\circ
B) 33.9 ∘\circ
C) 50.9 ∘\circ
D) 39.1 ∘\circ

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