What is the relation between focus length (f) and radius of curvature (R).
A. Focus distance= Radius of curvature
B. Focus Distance= 1/Radius of curvature
C. 2 x Focus distance= Radius of curvature
D. Focus distance= 2 x radius of curvature
Answer:C
What is the relation between focus length (f) and radius of curvature (R).
A. Focus distance= Radius of curvature B. Focus Distance= 1/Radius of curvature C. 2 x Focus distance= Radius of curvature D. Focus distance= 2 x radius of curvature