How does a concave lens form an image?

How does a concave lens form an image?

The image is formed as shown, where the two rays meet, between F and the lens. The image formed is virtual as we see that the light appears to pass through the focus behind the lens. Hence, the image formed by a concave lens is always erect and virtual

How do lenses and mirrors form images?

A system of lenses and/or mirrors forms an image by gathering rays from an object and then causes them to converge or diverge. A real image is formed when the optical system causes the rays to converge to a point, a virtual image is formed at the location from which they seem to originate.

What lens forms real images?

1) A convex lens always gives a real image.

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