To obtain a real image of an object, a concave mirror is typically used. This type of mirror can reflect light inward and focus it to form real images.
Characteristics of Concave Mirrors
Concave mirrors have a curved surface that bulges inward. They are commonly used in applications like shaving mirrors and satellite dishes.
Formation of Real Images
A real image is formed when light rays converge after reflecting off the mirror. For a concave mirror, this occurs under specific conditions:
- If the object is placed beyond the center of curvature, a real, inverted image is produced.
- When the object is at the center of curvature, the image is also real and inverted, but the same size as the object.
- If the object is placed between the focal point and the mirror, no real image is formed; instead, a virtual image is created.
Summary of Object Placement
In summary, a concave mirror can produce a real image when the object is located outside the focal point. However, it does not create a real image for all object positions, particularly when the object is too close to the mirror.