Total confinement of light for propagation in the optical fiber is obtained by:
Correct answer: C. Both A and B
- A. Total internal reflection
- B. Continuous refraction
- C. Both A and B
- D. None of these
Explanation
The total confinement of light for propagation in the optical fiber is obtained through a combination of total internal reflection and continuous refraction. When light travels from a medium with a higher refractive index to a medium with a lower refractive index at an angle greater than the critical angle, total internal reflection occurs. The continuous refraction of the light occurs as it travels through the optical fiber.
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Light is studied through reflection, refraction, dispersion, interference, diffraction and polarization, linking ray behavior with its wave nature. Questions may involve mirrors, lenses, optical instruments, refractive index and image formation, while geometrical optics deals with rays and wave optics explains effects such as interference and diffraction.
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