alleryStart learning →What makes an image a real image?
ARays actually cross there, so it can be projected
BRays only seem to cross there, so it looks solid
CIt is always upright and larger than the object
DIt lies on the same side of the lens as the object
Answer & Solution
Correct answer: A. Rays actually cross there, so it can be projected
1. In a real image, light rays from one point on the object actually cross at the location of the image.
2. Because real light arrives there, the image can be projected onto a screen, a piece of film or the retina of an eye.
3. The image is present whether or not a screen is put there to catch it.
4. Rays that only seem to cross give a virtual image instead, which no screen can capture.
_Source: OpenStax College Physics (CC BY 4.0), Ch 25 "Geometric Optics", section 25.6 Image Formation by Lenses_
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