what is 2F1,F1,F2,2F2 stands for???
left side of lens
F1=FOCAS
2F1=CENTRE OF CURVATURE
RIGHT SIDE OF LENS
F2=FOCUS
2F2=CENTRE OF CURVATURE
what is 2F1,F1,F2,2F2 stands for???
left side of lens
F1=FOCAS
2F1=CENTRE OF CURVATURE
RIGHT SIDE OF LENS
F2=FOCUS
2F2=CENTRE OF CURVATURE