Q

A lens forms an image three times larger than the object. If the image is erect, what is the magnification?

RRB Group D 09 Aug, 2026 (12:45 PM - 2:15 PM) 2026
✓ Answer: D + 3
The correct choice is + 3. It follows from the laws of reflection/refraction and the standard image-formation properties of lenses, mirrors or optical systems.
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