Which are the different cases of images formed by convex and concave lenses?

Convex Lens (6 Cases): A convex lens is thicker at the centre and thinner at the edges. When light passes through a convex lens, it refracts or bends towards the centre of the lens. Depending on the position of the object relative to the lens, the image formed by a convex lens can be real or virtual, upright or inverted, and magnified or diminished.

1. Object beyond the focal point (F): The image is real, inverted, and diminished.
2. Object at the focal point (F): No image is formed as the rays of light become parallel.
3. Object between the lens and the focal point (F): The image is real, inverted, and magnified.
4. Object at the centre of curvature (C): The image is real, inverted, and of the same size as the object.
5. Object between the centre of curvature (C) and the lens: The image is real, inverted, and magnified.
6. Object inside the focal point (F): The image is virtual, upright, and magnified.

Concave Lens (2 Cases): A concave lens is thinner at the centre and thicker at the edges. When light passes through a concave lens, it refracts or bends away from the centre of the lens. Depending on the position of the object relative to the lens, the image formed by a concave lens can only be virtual, upright, and diminished.

1. Object placed anywhere in front of the lens: The image is virtual, upright, and diminished.
2. Object placed at the focus of the lens: No image is formed as the rays of light become parallel.