What defines a real image in optics?

A real image in optics is characterized by light rays that converge at a specific point after passing through a lens or reflecting off a mirror. This convergence means that the light rays physically meet at a location, allowing the image to be formed on a screen or surface where it can be observed. Such images are typically inverted relative to the object and can vary in size depending on the distance from the lens or mirror used to form them.

The option indicating that a real image can be projected onto a screen is fundamental to its definition. When light rays converge, they create a distinct location where the image is clearly rendered, making it possible for this image to be displayed on a surface. This property distinguishes real images from virtual images, which do not converge and cannot be projected onto a screen.