A concave lens always forms a virtual image. (T/F)

Explanation

To determine whether the statement "A concave lens always forms a virtual image" is true or false, we can analyze the characteristics of a concave lens.

### Step-by-Step Solution:

1. **Understanding Concave Lens**: A concave lens is a type of lens that is thinner at the center than at the edges. It diverges light rays that are incident on it.

2. **Image Formation by Concave Lens**: When parallel rays of light (such as those from a distant object) pass through a concave lens, they diverge. The rays appear to originate from a point behind the lens.

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