In order for a light ray to propagate along a fiber-optic cable, what must the relationship be between the angle of incidence and the critical angle?

1. 

In order for a light ray to propagate along a fiber-optic cable, what must the relationship be between the angle of incidence and the critical angle?
[A]. θi > θc
[B]. θi < θc
[C]. θi = θc
[D]. none of the above

Answer: Option A

Explanation:

No answer description available for this question.
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