Standing 2.5 m in front of a plane mirror with your camera, you decide to take a picture of yourself without turning the camera around. To what distance should the camera be focused to get a sharp image?
Set to focus at 5.0 meters. Your image is 2.5 m behind the mirror.
5m
Standing 2.5 m in front of a plane mirror with your camera, you decide to take a picture
of yourself. To what distance should the camera be focused to get a sharp image.
To get a sharp image of yourself while using a plane mirror, you need to focus your camera at a specific distance. The distance at which you should focus your camera can be determined using the concept of image formation in plane mirrors.
When you look into a plane mirror, your image appears to be located behind the mirror at the same distance that you are standing in front of it. This is because the incident light rays from your face are reflected by the mirror, creating the illusion of an image that appears to be behind the mirror.
In this scenario, you stand 2.5 meters in front of the plane mirror. To take a sharp image, you need to focus the camera's lens at a distance that corresponds to the apparent position of the image behind the mirror. Since the image appears to be located 2.5 meters behind the mirror, you should focus the camera at a distance of 2.5 meters in front of the mirror.
Therefore, to get a sharp image of yourself, the camera should be focused at a distance of 2.5 meters in front of the plane mirror.