the image formed by a convex lens when the image is at infinity with the use of ray tube
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When an object is placed at infinity, the real image is formed at the focus. The size of the image is much smaller than that of the object
A convex lens will focus light and make a real and inverted image. The size of the image will depend on the position of the object and lens. concave lens is also called a diverging lens. A concave lens will disperse light and make an image that is always virtual, upright and smaller than the object.
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