Quick Answer:The Convex Mirror is a 50 mm diameter spherical convex (diverging) glass mirror that forms virtual, diminished images over a wide field of view, for optics practicals on image formation and focal length.
Last updated: 18 October 2026
Key Features
Diverging mirror curved outward toward the light.
Forms virtual, diminished images.
Wide field of view.
50 mm diameter, back-silvered and sealed with lead-free epoxy paint.
Technical Specifications
Specification
Value
Type
Spherical convex (diverging)
Diameter
50 mm
Glass
Float glass
Coating
Back-silvered, protective lead-free epoxy paint
Edges
Precision-ground
How It Is Used
Students look at objects reflected in the mirror to see that the images are always virtual and smaller than the object, and compare its wide view with that of a plane mirror. On an optical bench it is used in focal length experiments and to study how light diverges from a convex surface.
Frequently Asked Questions
What kind of image does the Convex Mirror form?
Virtual, diminished images, giving a wide field of view.