what type of wavefront will emerge from (i) a point source and (ii) distant light source ?

Explanation

To solve the question about the type of wavefront that emerges from a point source and a distant light source, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Wavefronts**:
- A wavefront is defined as the surface over which an oscillation has a constant phase. In simpler terms, it is the shape that the wave takes as it propagates through space.

2. **Wavefront from a Point Source**:
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