The Index of Refraction of the Core of a Piece

question 20

Multiple Choice

The index of refraction of the core of a piece of fiber optic cable is 1.72.If the index of the surrounding cladding is 1.41,what is the critical angle for total internal reflection for a light ray in the core incident on the core-cladding interface?

• A)55.1°
• B)44.0°
• C)49.6°
• D)60.6°

---

Definitions:

Stimulus Strength

The intensity of a stimulus, which can influence the magnitude of response in sensory and other physiological systems.

Resting Membrane Potential

The electrical potential difference across the plasma membrane when a cell is in an unstimulated condition.

Na+

Sodium ions, essential electrolytes in the body that play critical roles in nerve function, muscle contraction, and fluid balance.

ECF

Extracellular fluid, which is the body fluid outside the cells, playing a critical role in transporting nutrients and removing waste.