A Convex Lens
Concave lens
The edges of a convex lens are thicker than the middle.
Concave
no
CONCAVE lens.
A convex lens typically fits this description. Convex lenses are thinner in the middle and thicker around the edges, causing light rays passing through them to converge.
Concave lens
thicker at the edges that in the middle
The edges of a convex lens are thicker than the middle.
Concave. The opposite- thick in middle, thin at edges- is convex.
thicker, thinner
thicker at the edges that in the middle
Concave
no
CONCAVE lens.
They can be either. They will converge if thicker in the middle than edges, and diverge if thinner in the middle than edges.
It is called a convex lens.