The refractive index of glass is 1.5. Find the speed of light in glass.

Explanation

To find the speed of light in glass given its refractive index, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Refractive Index**:
The refractive index (η) of a medium is defined as the ratio of the speed of light in vacuum (c) to the speed of light in that medium (v). This can be expressed mathematically as:
\[
\eta = \frac{c}{v}
...