Question

Question 10
Which type of lens forms always a virtual image?

Answer 1

The concave lens always forms a virtual image.

• When an object is placed at infinity, a virtual image is formed at the focus.
• When an object is placed at a finite distance from the lens, a virtual image is formed between pole and focus of the convex lens.

At the same time, a convex lens forms a virtual image only when the object is placed in between focus and pole.