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Allisa [31]
3 years ago
5

An optical fiber uses one glass clad with another glass. What is the critical angle? (Assume the glass in the fiber has an index

of refraction of 1.69, and the glass in the cladding has an index of refraction of 1.50.)
Physics
1 answer:
Alenkasestr [34]3 years ago
5 0

Answer:

The critical angle is \theta  _c  =  62.57^o

Explanation:

From the question we are told that

    The  index of refraction of the glass in the fiber is n_f  =  1.69

     The index of refraction of the glass in the cladding is n_c  =  1.50

The critical angle is mathematically evaluated as

       \theta_c  =  sin^{-1}[\frac{n_c }{n_f } ]

substituting values

       \theta_c  =  sin^{-1}[\frac{1.50 }{1.69 } ]

       \theta  _c  =  62.57^o

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