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Total Internal Reflection

The working p...

Question

The working principle involved in optical fibre is :
a)Total internal reflection b)refraction c)reflection d) dispersion

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Solution

The working principle of an optical fibre is
a) Total internal reflection

a ray of light travels through the by continually bouncing off the inner wall of cable.

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Q. Optical fibre works on the principle of total internal reflection.

Q. Question 5
Which of the following phenomena of light are involved in the formation of a rainbow?

(a) Reflection, refraction and dispersion
(b) Refraction, dispersion and total internal reflection
(c) Refraction, dispersion and internal reflection
(d) Dispersion, scattering and total internal reflection

Q. Assertion :Optical fibres make use of total internal reflection. Reason: Light undergoes successive total internal reflections as it moves through an optical fibre.

Q. Assertion : Optical fibres are used for telecommunication.
Reason : Optical fibres are based on the phenomenon of total internal reflection.

Q. Assertion (A): Propagation of light through an optical fibre is due to total internal reflection taking place at the core-cladding interface.
Reason (R) : Refractive index of the material of the core of the optical fibre is greater than that of air.

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