Question

.................... Is the basic principle behind working of optical fibre​

Answer 1

Answer:

The optical fibre is a device which works on the principle of total internal reflection by which light signals can be transmitted from one place to another with a negligible loss of energy.

Explanation:

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Answer 2

Answer:

Optical fibres works on the principle of total internal reflection.

Explanation:

When light ray strikes at the internal surface of optical fibre cable called such that incidence angle is greater than critical angle, then incident light ray reflects in the same medium and this phenomenon repeats. In this way light signal travels from one end of the cable to another end