Question

determine the focal length of the lens​

Answer 1

$<font color = yellow>$$<p style="color:cyan;font-family:cursive;background :black;font-size:25px;">If you know the distance of the object you'remagnifying from the lens and the focal lengthof the lens, finding the distance of the image is easy with the lens equation. The lens equation is 1/f = 1/do + 1/di, where f = thefocal length of the lens..</p>$

Answer 2

Answer:

converging lens that is convex and to measure the focal length

using the formula:1/u+1/v=1/f

Explanation: