Basic Physics

# Properties of image formed by concave mirror

Object distance is smaller than the focal length of the concave mirror (do < f)

Based on the calculation of the image formation by the concave mirror, it is concluded that if the object distance (do) is smaller than the focal length (f), then the properties of the image are:

– Virtual means that the beam of light does not pass through the image

– Upright

– The farther the object is from the concave mirror, the greater the size of the image

– The farther the object from the concave mirror, the farther the image from the concave mirror

Objects located at the focal point of the concave mirror (do = f)

Based on the calculation of the image formation by the concave mirror, it is concluded that if the object is located at the focal point of the concave mirror, the properties of the image are:

– Virtual means that the beam of light does not pass through the image

– Upright

– The image is at a finite distance

The object is between the focal point and the center of curvature (f < do <R)

Based on the calculation of the image formation by the concave mirror, it is concluded that if the object is between the focal point and the radius of the mirror curvature, the properties of the image are:

– Real means the beam of light passes through the image

– Inverted

– The farther the object from the concave mirror, the smaller the image size

– The farther the object from the concave mirror, the closer the image from the concave mirror

Objects located at the center of curvature (do = R)

Based on the calculation of the image formation by the concave mirror, it is concluded that if the object is located at the center point of the concave mirror curvature, the image properties are:

– Real means the beam of light passes through the image

– Inverted

– Size of image = size of object

– The image distance = the object distance

Object distance is greater than the radius of curvature of the concave mirror (do > R)

Based on the calculation of the image formation by the concave mirror, it is concluded that if the object distance is greater than the radius of the curvature of the mirror, the properties of the image are:

– Real means the beam of light passes through the image

– Inverted

– The farther the object from the concave mirror, the smaller the image size

– The farther the object from the concave mirror, the closer the image is from the concave mirror

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