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    Exam 8: Various Aspects of Optical Fiber Design and Performance
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    An Si-O Bond with a Young's Modulus of 9*10<sup>10</sup>Nm<sup>?1</sup> Have an Elliptical
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An Si-O Bond with a Young's Modulus of 9*1010Nm?1 Have an Elliptical

Question 24

Question 24

Multiple Choice

An Si-O bond with a Young's modulus of 9*1010Nm?1 have an elliptical crack of depth 7nm. The surface energy is 2.29 J. Estimate fracture stress for silica fiber.


A) 4.32*109nm?1
B) 6.32*109nm?1
C) 5.2*109nm?1
D) 3*109nm?1

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