What is the shape of the wavefront in each of the following cases ?
Light diverging from a point source.

Explanation

To determine the shape of the wavefront when light diverges from a point source, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Point Source**:
- A point source is an idealized source of light that emits light uniformly in all directions.
- Examples include stars or a small bulb.

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