Question

what do you mean by total internal reflection? describe the critical angle in fiber optics.​

Answer 1

Answer:

hello dear

Explanation:

Critical angle, in optics, the greatest angle at which a ray of light, travelling in one transparent medium, can strike the boundary between that medium and a second of lower refractive index without being totally reflected within the first medium. Quick Facts. Total internal reflection.

i hope it helps u

please please marke it as a brainly answers

Answer 2

Answer:

The complete reflection of a light ray reaching an interface with a less dense medium when the angle of incidence exceeds the critical angle.

Explanation:

In an optical fiber, the maximum angle from the axis at which light can remain confined within the core for "total internal reflection." In contrast to the "acceptance angle," which is measured outside the fiber, the critical angle is a measurement within the fiber.