Question

what is focal length of the two lens tell from the image

Answer 1

Answer:

30cm and 8cm focal length

Answer 2

Answer:

To find the focal length of a lens, measure the distances and plug the numbers into the focal length formula. Be sure all measurements use the same measurement system. The focal length is therefore 4 centimeters. The focal length of the lens is therefore 3.33 centimeters.