A plane wavefront is incident normally on a convex lens. Sketch the reflected wavefront emerging from the lens.

Explanation

To solve the problem of sketching the refracted wavefront emerging from a convex lens when a plane wavefront is incident normally, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Setup**:
- We have a convex lens and a plane wavefront incident normally on it. The plane wavefront consists of parallel rays of light coming from a distant source.

2. **Draw the Convex Lens**:
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