Question

if an object is placed 21 centimeter From a convex lens, the image formed is slightly smaller than the object .if the object is placed 19 centimeters from the lens the image is slightly larger than the object the approximate focal length of lens is

Answer 1

When object is placed at the 2F in front of the convex lens then size of the image is same as that of the object.

radius of curvature is approximately equal to 20 cm
then focal length = 10 cm

I hope this will help you

Answer 2

Answer:

pls mark it as brainliest answer