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The figure depicts a simplistic optical fiber: a plastic core (n1
light ray is incident on one end of the fiber at angle 0. The rays is to undergo total internal reflection at point A, where it
encounters the core-sheath boundary. (Thus there is no loss of light through that boundary.) What is the maximum value
of e that allows total internal reflection at A?
1.56) is surrounded by a plastic sheath (n2 = 1.44). A
Number
Units

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