In the structure of fiber, the light is guided through the core due to total internal:

AReflection

BRefraction

CDiffraction

DNone of these

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Correct Answer: A: Reflection

Explanation: The correct answer is A: Reflection. In optical fiber, light is guided through the core due to total internal reflection. When light hits the boundary between the core and cladding at a certain angle, it reflects completely back into the core.

In the structure of fiber, the light is guided through the core due to total internal:

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