Q.

When more than one mode is propagating, how is it dispersed?

A. dispersion
B. inter-modal dispersion
C. material dispersion
D. waveguide dispersion
Answer» B. inter-modal dispersion
Explanation: when more than one mode is propagating through a fibre, then inter modal dispersion will occur. since many modes are propagating, they will have different wavelengths and will take different time to propagate through the fibre.
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