The concave lens is a diverging lens, because it causes the light rays to bend away (diverge) from its axis.

Is concave the same as diverging?

A diverging lens is a lens that diverges rays of light that are traveling parallel to its principal axis. ... The fact that a double concave lens is thinner across its middle is an indicator that it will diverge rays of light that travel parallel to its principal axis. A double concave lens is a diverging lens.

Is concave lens always a diverging lens?

If refracted rays appear to diverge from a single point, then this is called as diverging behaviour of the lens. This is observed when a virtual image is formed. These can be used in applications when intensity of light is to be spread over the required region. Concave lens always behaves as a diverging lens.