Question

Identifies the focal point of the lens and measures focal length. ​

Answer 1

Answer:

I know how to find the focal length using the lens formulas, and I know where the focal point is on a diagram.

I've read a few definitions for the focal point such as (Cbakken.net)

Concave lens

Converging light rays striking a concave lens but headed towards a point on the other side can be bent until they emerge parallel to the axis. The point that causes this to happen is called the focal point.

and

The focal point of a concave lens is the point where light rays parallel to the axis seem to diverge from after passing through the lens. The distance from the lens to this point is called the focal length of the lens.

Explanation:

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