The critical angle for water is `48.2^@`. Find is refractive index.

Explanation

To find the refractive index of water given the critical angle, we can follow these steps:

### Step 1: Understand the relationship between critical angle and refractive index
The critical angle (θ_C) is related to the refractive index (μ) of a medium by the formula:
\[ \sin(\theta_C) = \frac{1}{\mu} \]

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