The Effects of an Object's Position On The Image Size and Position for a Double Convex Lens





The object is placed about twice the focal length away from the lens. The image is real and upside down.



When the object is moved closer to the focal point, the image gets bigger and further away from the lens but is still real and upside down.


Move the object past the focal point toward the lens and the image becomes larger and right side up. This type of  image is called a virtual image.


Moving the object yet closer to the lens reduces the size of the virtual image.