Question

write the formula to find the focal length of a concave lens​

Answer 1

Answer:

This sis quite easy..

1/f=1/v-1/u,

Where:-

v = Distance of image from lens

u = Distance of object

f = Focal length

(PS mind the signs while calculating numerically,Use Sign Conventions)

Hope it helps Pls mark it brainliest..

Adieu,

Answer 2

Formula for focal length [f] of a concave lense is f2 = (f1F/(f1-F).

hope it helps you !!!

plz mark me as a brainlister

and don't forget to follow me !!!

@NUSRAFATIMA