A concave lens is commonly called ..........

You may begin by outlining each of the possible solutions to the issue. Draw a diagram to illustrate this scenario using the example of a concave lens with two incident rays perpendicular to the primary axis. Next, identify the type of lens by examining the light rays that the concave lens bent.

A lens is said to be converging when light rays that have been refracted by it bend in the opposite direction.
The lens is diverging when the light rays bend away from one another after being refracted through it.
A lens is considered normal when light rays pass through it without being refracted.
There isn't a tangent lens.
Let's sketch a ray diagram of a concave lens with two incident rays parallel to the major axis to better comprehend the type of lens a concave lens is.
The ray diagram will look like this.

As you can see, a virtual picture will be created at the concave lens' focus whenever the incoming rays are perpendicular to the primary axis.
But the refracted light beams are what we are really interested in, not the virtual image. As you can see, the light beams are diverging as they are moving away from one another and toward the other.
The concave lens therefore acts as a diverging lens.

Hence, the correct answer is B.