If the Index of Refraction of a Material Is 2

question 65

Multiple Choice

If the index of refraction of a material is 2, this means that light travels

• A) 2 times as fast in air as it does in vacuum.
• B) 2 times as fast in vacuum as it does in the material.
• C) 2 times as fast in the material as it does in air.
• D) 1/2 as fast in air as it does in the material.
• E) 2 times as fast in the material than it does in vacuum.

---

Definitions:

Standard Deviation

A statistical measure that quantifies the variation or dispersion of a set of data points.

Optimal Risky Portfolio

A portfolio that offers the highest expected return for a given level of risk or the lowest risk for a given level of expected return, according to modern portfolio theory.

Risk Free Rate

The theoretical return on an investment with zero risk, often represented by government bonds or treasury bills of a stable country.

Standard Deviation

A statistical measurement that sheds light on the dispersion or spread of a set of numbers or data points around the mean value.