Question

An object is placed 10 cm away from a convex lens. The focal length of the lens is 40 cm, calculate the position and nature of the image.

Answer 1

The object is placed 10 cm away from the point F (Focal Length)

Thus, the obj. is at 1/4th of the length of the focal length (10/40=1/4)

Hence it is between F and O(Optical Centre).

Image Description:

1. Nature: Virtual and Erect
2. Size: Enlarged
3. Position: Behind the object.