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Byju's Answer
Standard XII
Physics
Optical Fiber
Optical fibre...
Question
Optical fibres transmit light along its axis, by the process of :
A
total internal reflection
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B
refraction
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C
interference
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D
diffraction
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Solution
The correct option is
A
total internal reflection
The side-wall of optical fibre provides total internal reflection of beam of light incident on it.
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Assertion :Optical fibres make use of total internal reflection. Reason: Light undergoes successive total internal reflections as it moves through an optical fibre.
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Assertion :Optical fibres are used to transmit light without any appreciable loss in its intensity over distance of several kilometers. Reason: Optical fibres are very thick and all the light is passed through it without any loss.
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Optical fibre works on the principle of total internal reflection.
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