Science (086) — AI-generated practice question

When a concave mirror produces a virtual, erect, and enlarged image, the object is placed between the pole (P) and the principal focus (F) of the mirror — i.e., between F and the mirror, closer than the focal length.

In this position, the reflected rays diverge after reflection and do not actually meet in front of the mirror. They only appear to meet behind the mirror (virtual image). Since no reflected light rays actually converge at the image point, the image cannot be caught on a screen — a screen can only capture real images formed by actually intersecting rays.

Source: Chapter 9, Table 9.1 — Image formation by a concave mirror

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• Key fact from Table 9.1: Object between P and F → image is behind the mirror, virtual, erect, enlarged.
• Examiners expect you to name the position clearly ("between P and F" or "between the pole and the focus").
• The reason the image can't be on a screen is the core concept: virtual images are formed by diverging (not converging) reflected rays; only real images (formed by converging rays) appear on a screen.
• Don't just say "it's virtual" — explain why virtual images can't be screened (rays don't actually meet).