Answer:
The concave lens has a virtual focus.
Concave lens
- A concave lens is a type of lens that diverges a straight light beam from the source into a diminished, upright, virtual image.
- It has the ability to create both real and virtual images.
- At least one inside surface of concave lenses is curved.
- A concave lens is also known as a diverging lens because they are shaped round inwards at the center and bulges outwards through the edges, allowing light to diverge on it.
- They’re used to treating myopia because they make faraway items appear smaller than they are.
Concave lens image formation
- A virtual image is created at the focus when an object is positioned at infinity. The image is a smaller than the actual object.
- A virtual image is created between the pole and the focus of the convex lens when an object is positioned at a finite distance from the lens. The image is smaller than the object.
