Quick Answer: The Mirrors, Concave are spherical converging mirrors in float glass, with an aluminium or silvered reflecting back under an opaque protective coating. They are made in 50 mm, 60 mm and 75 mm diameters, with focal lengths from 50 mm to 300 mm.
Last updated: October 2026
Key Features
Spherical concave (converging) mirror
Float glass with an aluminium or silvered reflective back
Opaque, corrosion-resistant coating on the back
Diameters 50 mm, 60 mm and 75 mm
Focal lengths from 50 mm to 300 mm
Technical Specifications
Specification
Value
Geometry
Spherical concave (converging)
Material
Float glass
Reflective coating
Aluminium or silvered back
Back finish
Opaque protective coating
Diameter
50mm, 60mm or 75mm
Focal length range
50mm to 300mm
HS Code
9023.00.90 (Demonstrational Instruments)
About This Product
Concave mirrors are used in optics practicals to find focal length by focusing a distant object, and to study how the position and size of the image change as the object moves towards the mirror. Choosing mirrors of different focal lengths lets groups compare results. Laboratories and colleges in Palestine, Philippines, Italy, Bolivia, Timor-Leste and Yemen can buy the Mirrors, Concave through an export order.
Frequently Asked Questions
What focal lengths are the Mirrors, Concave made in?
Focal lengths range from 50 mm to 300 mm, in 50 mm, 60 mm and 75 mm diameters.
