(13%) Problem 7: Components of some computers communicate with each other throug

Question

(13%) Problem 7: Components of some computers communicate with each other through optical fibers having an index of refraction n 1.55 Randomized Variables d = 0.175 m what time in nanoseconds is required for a signal to travel 0'175 m through such a fiber? Grade Summary Deductions Potential 0% 100% cosO Submissions Attempts remaining: 6 (3% per attempt) detailed view sin) tan acosO 789 cotan atan)acotan) cosh)tanh cotanh sinhO END Degrees Radians BACKSPACE DELCLEAR Submit Hint I give up! Hints: 0% deduction per hint. Hi nts remaining: 2 Feedback: 0% deduction per feedback.

Explanation / Answer

refractive index ( n ) = 1.55

                      n = c / v        c is speed of light in vaccum

               speed in medium v = c /n = 3 x 10^8 /1.55

                                           v = 0.09 x 10^8 m/sec

        time = distance / velocity = 0.175 / 0.09x 10^8 = 0.09 x 10^-8 sec

                                                              t = 0.9 nano second

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