Question

find the focal lenght of a concave lense having radius of curvature 40cm, 60cm​

Answer 1

Answer:

Hope my answer helps you mate :-)

Explanation:

We know That R=2f

So if Radius of curvature =40

40=2f

f=20cm

And if Radius of curvature =60cm

60=2f

f=30cm

Mark as brainliest answer and follow me ☑️

Answer 2

Answer:

plz join this meeting......