Physics - Optics - Lenses - Convex and concave lenses - Types of Lenses
A 5-step lesson. Step 1: 'Convex (converging) lens: Thicker in the middle. Parallel rays converge to a real focal point on the other side. Can form real or virtual images.' Step 2: 'Concave (diverging) lens: Thinner in the middle. Parallel rays diverge as if coming from a virtual focal point on the