Question

How could you find the focal length of a convex lens rapidly but approximately?

Answer 1

Here is how you can find❤

✔F = uv/(u+v)

Answer 2

Answer:you can find the focal length by using lens formula..

Explanation:lens formula is..

1/v - 1/u = 1/f

Where v - Image distance

u - object distance and

f - focal length