Question

Is it necessary to project a real image onto a screen for it to exist?

Short answer

No, even without projection, an actual image exists.

Step-by-step solution

Define Geometric Optics

Geometrical optics, often known as ray optics, is an optics model that describes light propagation using rays. In geometric optics, a ray is an abstraction that can be used to approximate the routes along which light propagates under particular conditions.

Explanation

Yes, even in the absence of a screen, genuine images are produced. If a mirror is present, the true picture will serve as an object for the mirror and will be mirrored.

Therefore, No, even without projection, there is a real image.