Question

What is concave lens?​

Answer 1

A concave lens is thinner in the middle than it is at the edges. This causes parallel rays to diverge . They separate but appear to come from a principle focus on the other side of the lens.

Answer 2

Diverging Lens.

Step-by-step explanation:

Concave lenses have at least one surface curved inside. A concave lens is also known as a diverging lens because it is shaped round inwards at the centre and bulges outwards through the edges, making the light diverge. They are used to treat myopia as they make faraway objects look smaller than they are.