Concave mirror ray diagram: object between C and F

An example figure from the Ray Diagram Generator.

A ray diagram of a concave mirror with F and C marked, an object between C and F, four principal rays, and a real, inverted, larger image beyond C — A concave mirror of focal length 10 cm with an object 15 cm away, between C and F. Four rays reflect from it: parallel then through F, through F then parallel, through C and back on itself, and off the vertex at the same angle. They meet 30 cm in front of the mirror, beyond C, at the real, inverted image twice the object’s size.

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Answer key (real is positive)

Image distance: 30 cm, magnification: −2
Real, inverted, magnified, in front of the mirror

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