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

Explanation

To solve the question regarding the type of wavefront that emerges from a point source and a distant light source, we can break it down into two parts.

### Step-by-Step Solution

1. **Understanding Wavefronts**:
- A wavefront is defined as the surface over which an oscillation has a constant phase. It represents the position of the wave at a given moment in time.

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