Which of the following best describes the image formed by a concave mirror when the object is located somewhere between the focal point and the centre of curvature of the mirror?

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BlackTom AI · Accepted Answer

Question restatement: Which description matches the image formed by a concave mirror when the object lies between the focal point (F) and the centre of curvature (C)?

Option a: real, inverted and reduced. Here the image is described as smaller than the object. For a concave mirror with the object between F and C, the image is actually magnified, not reduced, so this option mischaracterizes the size and thus is incorrect.

Option b: virtual, upright and enlarged. A virtual, upright image occurs for a concave mirror when the object is between F and the mirror, not between F and C. Since the position stated is between F and C, this description does not apply, making this option incorrect.

Option c: real, inverted and enlarged. This matches the well-known ray-tracing result for a concave mirror with the object between F and C: the rays converge to form a real image, which is inverted and larger than the object. This option aligns with the standard behavior of concave mirrors in this region.

Option d: virtual, upright and reduced. A virtual image that is upright and reduced would correspond to a scenario opposite to the given one (and is not produced between F and C for a concave mirror). Therefore, this choice is incorrect.

In summary, the key idea is how concave mirrors transform rays depending on object position: between F and C yields a real, inverted, enlarged image, while the other described combinations do not match that specific region of object placement. The only option that fits the correct characteristic set is the one describing a real, inverted and enlarged image.

MUF0122 Physics Unit 2 - Semester 2, 2025 3.8 Mirrors

Which of the following best describes the image formed by a concave mirror when the object is located somewhere between the focal point and the centre of curvature of the mirror?

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