Q

A convex mirror has a focal length of 20 cm. If an object is placed 40 cm from the mirror, what will be the nature and relative size of the image?

RRB Group D 05 Aug, 2026 (9:00 AM - 10:30 AM) 2026
✓ Answer: D Virtual, smaller than the object
The correct choice is Virtual, smaller than the object. It follows from the laws of reflection/refraction and the standard image-formation properties of lenses, mirrors or optical systems.
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