#15 Total Internal Reflection For #15-#16 the critical angle relation may be of
ID: 1731189 • Letter: #
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#15 Total Internal Reflection For #15-#16 the critical angle relation may be of use, where a ray propagates in a medium with an index of refraction n, emergin into air where the index of refraction is 1.00. A refractive medium has an index of refraction of 1.50. What is the critical angle c? A. 90.0 O B. 63.70 C. 41.80 O D. 31.4° #16 Total Internal Reflection A newly discovered transparent homogeneous polymer has an unknown index of refraction Suppose the critical angle·for the material is measured to be 35.70; rays with larger inci- dent angles are internally reflected and do not emerge from the medium. What is the index of refraction of the medium? O A. 1.41 O B. 1.51 O C. 1.61 #17 Total Internal Reflection and Fiber Optics Optical fibers are a central part of technology for rapid information transmission with a high level of efficiency. A new type of optical fiber is crafted with an index of refractionn 1.25 less than that of water in the vicinity of room temperature, where nH2O = 1.33. Why is the fact that nExplanation / Answer
15] By the given formula, ThetaC = arcsin(1/n) = arcsin(1/1.5) = 41.8 degree.......option c
16] Rearranging the given formula, n = 1/ sin thetaC = 1/ sin 35.7 degree = 1.71 option D
17] option a is correct, TIR will not take place as it has less index than that of water.
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