Answer:
The correct answer is concave lens.
Step-by-step explanation:
From the figure we can see that the given lens is a concave lens.
Concave lens
The concave lens is also called diverging lens. Diverging means that the concave lens spread out all the light rays refracted through it.
Shape:
The shape of lens is that,thinner at the center than its edge.This concave lens is used to correct Myopia (Short- sightedness )