RG® Optical Set| Optics Science Activities| Optics Activity Set of Convex Lens 50 mm, Concave Lens 50 mm, Convex Mirror 50 mm, Concave Mirror 50 mm, Prism 50 mm x 50mm x
Concave Lens Uses & Examples | What is a Concave Lens? - Video & Lesson Transcript | Study.com