Question

An image formed by a lens is erect. Such an image could be formed by a

• A. convex lens provided the image is smaller than the object.
• B. concave lens provided the image is smaller than the object.
• C. concave lens provided the image is larger than the object.
• D. concave lens provided the image is of the same size.

Answer 1

The correct option is B

concave lens provided the image is smaller than the object.

1. The concave lens diverges a straight beam of light.
2. It is thinner at the center and gets thicker as we move towards the edges.
3. A virtual, erect, and diminished image of an object is formed by a concave lens.
4. Whereas a convex lens forms magnified (larger), erect and virtual images.

Hence, the answer is (B) concave lens provided the image is smaller than the object.