Quick Answer: Physics Demonstration Convex Mirror is a diverging mirror with an outward-curving reflective surface, used to trace reflected rays, locate the virtual focus and study wide-field viewing.
Last updated: October 2026
Key Features
Outward-curved (convex) reflecting surface
Gives an upright, reduced virtual image of a real object
Focal length negative under the standard Cartesian sign convention
Used with a ray-tracing board, demonstration stand or optical-bench holder
Technical Specifications
Specification
Value
Reflective profile
Convex surface
Image characteristics
Virtual, upright and diminished for a real object
Focal-length sign
Negative (standard Cartesian convention)
About This Product
Why convex mirrors show a broader scene than a plane mirror of similar size is easy to demonstrate with this one: students align its principal axis with a ray source, trace the spreading rays and extend them back behind the surface. The comparison with plane and concave mirrors is a regular part of Light And Optics teaching.
Frequently Asked Questions
Q1. Where does the focus of a convex mirror lie? Behind the mirror. Reflected rays from a parallel beam spread out and appear to originate from a virtual principal focus there.
Q2. Can it be mounted on an optical bench? Yes, when the mirror frame and stem dimensions match the bench carrier or holder.
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