A pond appears to be 2.7 m deep. If the refractive index of water is `4/3`, find the actual depth of the pond.

Explanation

To find the actual depth of the pond, we can use the relationship between the refractive index, real depth, and apparent depth. Here’s a step-by-step solution:

### Step 1: Understand the given information
- The apparent depth of the pond (the depth it appears to be) is given as 2.7 meters.
- The refractive index of water is given as \( \frac{4}{3} \).

### Step 2: Use the formula for refractive index
The formula relating the refractive index (n), real depth (D), and apparent depth (d) is:
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