Does A Concave Mirror Make Things Bigger
Does a Concave Mirror Make Things Bigger?
Concave mirrors are a fascinating type of mirror that can be used to create both real and virtual images. Real images are formed when light rays actually converge at a point, while virtual images are formed when light rays only appear to converge at a point. The size of the image formed by a concave mirror depends on the distance between the object and the mirror, as well as the focal length of the mirror. The focal length of a mirror is the distance between the mirror and the point where light rays parallel to the principal axis converge after reflection. When an object is placed closer to a concave mirror than the focal point, the image formed is virtual, upright, and larger than the object. As the object is moved farther away from the mirror, the image becomes smaller and eventually becomes real when the object is placed at the focal point. When the object is placed beyond the focal point, the image formed is real, inverted, and smaller than the object. The magnification of a concave mirror is the ratio of the height of the image to the height of the object. The magnification of a concave mirror is always positive for virtual images and negative for real images. The magnification of a concave mirror is given by the equation: ``` M = -d_i / d_o ``` where: * M is the magnification * d_i is the image distance * d_o is the object distance The magnification of a concave mirror can be used to determine the size and type of image that will be formed for a given object distance.
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