how to find f where u and v are unknown can anyone tell the formula to find - Science - Light - Reflection and Refraction

Question

how to find f where u and v are unknown? can anyone tell the
formula to find

Decoder_2 · Accepted Answer

Dear student,In that case may be power is given, then we will use formula,f=1Por may be centre of curvature R is given then we will use formula,f=R2Regards

how to find f where u and v are unknown? can anyone tell the formula to find