A positive magnification (+m) indicates that the image is erect (upright) relative to the object. A negative magnification (-m) indicates that the image is inverted. The magnitude of the magnification (| m|) indicates the size of the image relative to the object: |m| > 1 means the image is larger, |m| = 1 means it's the same size, and |m| 1). For a single lens, an erect image is always a virtual image.
If the magnification produced by a lens is +2, then the image is :
Asked in UPSC CDS 1 2022 · Topic: Optics (Thin and Thick Lenses, lens combinations)
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