Answer: m = -v/u.
- A m = -v/u
- B m = v/u
- C m = -u/v
- D m = u/v
Correct answer: A. m = -v/u
Explanation: Magnification m = -v/u. Negative m means real inverted image; positive m means virtual erect image.
Concave mirror ray construction: a ray parallel to the axis reflects through F, and a ray through F reflects parallel, locating the inverted real image. Image: Maxmath12, CC0, via Wikimedia Commons.
Concept context
Reflection, refraction, lenses, mirrors, total internal reflection.