The Speed of Light Generally Decreases When It Passes Through $\times$

question 30

Multiple Choice

The speed of light generally decreases when it passes through media other than a vacuum.The speed,v,is approximately c (2.998 $\times$ 10⁸m/s) divided by a quantity called the medium's refractive index, $\eta$ .In which of the following would the frequency of 193 nm light be the lowest? ( $v$ = c/ $\eta$ ; c = $\lambda$$v$ )

• A)hydrogen,\(\eta\) = 1.0001
• B)carbon tetrachloride,\(\eta\) = 1.461
• C)silicone oil,\(\eta\) = 1.520
• D)water,\(\eta\) = 1.3330
• E)diamond,\(\eta\) = 2.419

---

Definitions:

Thomas Jefferson

The third President of the United States (1801-1809), principal author of the Declaration of Independence (1776), and one of the most influential Founding Fathers for his promotion of the ideals of democracy and republicanism.

Independent Nation

A sovereign state with complete autonomy and self-governance, not controlled by any foreign power.

Whiskey Rebellion

A tax protest in the United States in the 1790s, the first major challenge to the new government's authority, showing federal power by quelling the rebellion.

Federalists

A political group in the late 18th century United States that supported a strong federal government and the ratification of the Constitution.