The refractive index of diamond is `2.42`. What is the meaning of this statement ?

Explanation

To understand the meaning of the statement "The refractive index of diamond is 2.42," we can break it down into a step-by-step explanation:

### Step 1: Understanding Refractive Index
The refractive index (n) 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). The formula is given by:
\[ n = \frac{c}{v} \]

### Step 2: Identifying the Values
In this case, we know:
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