Transmission of light in optical fibre is due to :
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Verified by ExpertsThe correct answer is:
D
An optical fibre is a device based on total internal reflection by which a light signal can be transferred from one place to the other with a negligible loss of energy.
It consists of a very long and thin fibre of quartz glass.
When a light ray is incident at one end A of fibre making a small angle of incidence. It suffers multiple total internal reflections and finally it reaches the point B.
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