David is observing his image in a plane mirror. The distance between the mirror and his image is 4m. If he moves 1m towards the mirror, then the distance between David and his image will be

Options

A. 3m
B. 5m
C. 6m
D. 8m/s

Explanation

To solve the problem step by step, we need to analyze the situation involving David, the plane mirror, and the distances involved.

### Step-by-Step Solution:

1. **Identify Initial Distances**:
- David is initially standing at a distance of 4 meters from the mirror.
- Therefore, the distance from David to the mirror (U) is 4 meters.
- The distance from the mirror to David's image (V) is also 4 meters because in a plane mirror, the distance of the image from the mirror is equal to the distance of the object from the mirror.
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