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Question 18N.3.SL.TZ0.10b.iii

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Date November 2018 Marks available [Maximum mark: 1] Reference code 18N.3.SL.TZ0.10b.iii
Level SL Paper 3 Time zone TZ0
Command term Suggest Question number b.iii Adapted from N/A
b.iii.
[Maximum mark: 1]
18N.3.SL.TZ0.10b.iii

The diagram shows the longest and shortest paths that a ray can follow inside the fibre.

For the longest path the rays are incident at the core–cladding boundary at an angle just slightly greater than the critical angle. The optic fibre has a length of 12 km.

 

(b.iii)

Suggest whether this fibre could be used to transmit information at a frequency of 100 MHz.

[1]

Markscheme

no, period of signal is 1 × 10−8 «s» which is smaller than the time delay/OWTTE ✔

 

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