Suppose that you want to take a photograph of yourself as you look at your image in a flat mirror 1.6 away.
For what distance should the camera lens be focused?
light is moving 3.2 meters from it's source.
To determine the distance at which the camera lens should be focused, we need to understand the concept of image formation in a flat mirror.
When you look at yourself in a flat mirror, the light rays from your image bounce off the mirror and reach your eyes. The mirror creates a virtual image that appears to be behind the mirror.
In this scenario, the camera is acting as your eyes. The goal is to capture the same image that your eyes see. To do this, we need to focus the camera lens at the position where the virtual image appears.
Given that the mirror is located 1.6 meters away, we can determine the position of the virtual image. The virtual image appears to be located at the same distance behind the mirror as the actual object is in front of it.
So, the distance at which the camera lens should be focused is also 1.6 meters. By focusing the lens at this distance, the camera will capture the virtual image exactly as you see it in the mirror.