If the refractive index of water with respect to air `(""_(a)mu_(w))` is `5/3`. Calculate the refractive index of air with respect to water `(""_(w)mu_(a))`.

Explanation

To solve the problem of finding the refractive index of air with respect to water given that the refractive index of water with respect to air is \( \frac{5}{3} \), we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Given Information:**
- The refractive index of water with respect to air is denoted as \( \mu_{w/a} \) and is given as \( \frac{5}{3} \).

2. **Use the Relationship Between Refractive Indices:**
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