Properties of EM Waves: Practice Problem & Solution

Solution Explained:

To solve this problem, we apply the core principles of Properties of EM Waves. Understanding the underlying formula is key to arriving at the correct answer below:

The refractive index is defined as $n = \frac{c}{v}$ . We know $c = \frac{1}{\sqrt{\mu_0\epsilon_0}}$ and $v = \frac{1}{\sqrt{\mu\epsilon}}$ . Substituting these expressions, we get $n = \frac{1 / \sqrt{\mu_0\epsilon_0}}{1 / \sqrt{\mu\epsilon}} = \sqrt{\frac{\mu\epsilon}{\mu_0\epsilon_0}}$ .