An object is placed at a distance of 30 cm from a concave lens of focal length 15 cm. List four characteristics (nature, position, etc.) of the image formed by the lens.
We have, u = - 30 cm ⇒ f = -15 cm
Using lens formula, we have
Here, characteristics of the image formed by the concave lens are:
- Image formed is virtual.
- Image is erect.
- Image is formed on the same side of the lens as the object.
- Diminished image.