Question

13.An object of length 4cm is placed at a distance 20cm from a convex

lens of focal length 10 cm. What is the length and nature of the image?​

Answer 1

Answer:

Object distance, u = -10 cm (It is to the left of the lens.) Focal length, f = + 20 cm (It is a convex lens.) Thus, the image is formed at a distance of 20 cm from the convex lens (on its left side). ... So, the image formed is virtual and erect.