Light rays move in straight lines. But through an optical fibre, they can move in any type of zigzag path because
the holes through the fibre are extremely fine.
light rays are absorbed at the entry end and relieved at the exit end of the fibre.
scattering of light occurs inside the fibre.
successive total internal reflections occur as a ray moves through the fibre.
Answer is Wrong!
Answer is Right!
This question was previously asked in
UPSC NDA-2 – 2019