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STD 12 - Communication — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - Communication4 Marks
MCQ
The attenuation in optical fibre is mainly due to
  • A
    Absorption
  • B
    Scattering
  • C
    Neither absorption nor scattering
  • ✓
    Both $(a)$ and $(b)$
✓

Answer

Correct option: D.
Both $(a)$ and $(b)$
d
(d) A very small part of light energy is lost from an optical fibre due to absorption or due to light leaving the fibre as a result of scattering of light sideways by impurities in the glass fibre.

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