everyday science MCQ #49464

Optical fibers transmit data using light based on the principle of:

everyday science MCQ #49464

  1. Question 1

    Q1. Optical fibers transmit data using light based on the principle of:

    • A) Total internal reflection
    • B) Refraction at glass-air interface
    • C) Diffraction through narrow apertures
    • D) Polarization of electromagnetic waves

    Answer: Total internal reflection

    Explanation: When light travels from the dense glass core to the less dense cladding at an angle exceeding the critical angle, it undergoes total internal reflection and stays trapped inside the fibre, allowing lossless transmission over long distances.