An object is placed at the focus of a concave mirror. The image will be

When an object is placed at the principal focus (F) of a concave mirror, the light rays originating from the object strike the mirror and reflect as parallel rays. According to the laws of reflection, these parallel rays are considered to meet at infinity. Consequently, the image is formed at infinity. Because the rays are parallel and directed towards the reflective side, the image is characterized as real and inverted. Furthermore, as the distance from the principal axis increases significantly at such a vast distance, the image is highly enlarged or infinitely magnified. This principle is utilized in searchlights and headlamps, where a light source is placed at the focus to produce a powerful parallel beam. In contrast, objects at infinity produce highly diminished images at the focus.