Question

What is the formula to find focal length. ​

Answer 1

Ok Indhu

I felt nice to hear that your test gone well

Best of luck for your next tests

I too had text only one left Hindi

Other gone well only

Have a Miraculoustic day

May God bless you dear indhu

Answer 2

Answer:

1/f = 1/v + 1/u

Explanation:

here u = object distance, v = image distance, f = focal length